Merge "Zen: Update condition text for current condition." into lmp-mr1-dev
diff --git a/api/current.txt b/api/current.txt
index 746d31a..a76b24ed 100644
--- a/api/current.txt
+++ b/api/current.txt
@@ -2708,7 +2708,9 @@
     method public void invalidateAuthToken(java.lang.String, java.lang.String);
     method public static android.content.Intent newChooseAccountIntent(android.accounts.Account, java.util.ArrayList<android.accounts.Account>, java.lang.String[], boolean, java.lang.String, java.lang.String, java.lang.String[], android.os.Bundle);
     method public java.lang.String peekAuthToken(android.accounts.Account, java.lang.String);
-    method public android.accounts.AccountManagerFuture<java.lang.Boolean> removeAccount(android.accounts.Account, android.accounts.AccountManagerCallback<java.lang.Boolean>, android.os.Handler);
+    method public deprecated android.accounts.AccountManagerFuture<java.lang.Boolean> removeAccount(android.accounts.Account, android.accounts.AccountManagerCallback<java.lang.Boolean>, android.os.Handler);
+    method public android.accounts.AccountManagerFuture<android.os.Bundle> removeAccount(android.accounts.Account, android.app.Activity, android.accounts.AccountManagerCallback<android.os.Bundle>, android.os.Handler);
+    method public boolean removeAccountExplicitly(android.accounts.Account);
     method public void removeOnAccountsUpdatedListener(android.accounts.OnAccountsUpdateListener);
     method public android.accounts.AccountManagerFuture<android.accounts.Account> renameAccount(android.accounts.Account, java.lang.String, android.accounts.AccountManagerCallback<android.accounts.Account>, android.os.Handler);
     method public void setAuthToken(android.accounts.Account, java.lang.String, java.lang.String);
@@ -5393,6 +5395,7 @@
     field public static final int ENCRYPTION_STATUS_UNSUPPORTED = 0; // 0x0
     field public static final java.lang.String EXTRA_ADD_EXPLANATION = "android.app.extra.ADD_EXPLANATION";
     field public static final java.lang.String EXTRA_DEVICE_ADMIN = "android.app.extra.DEVICE_ADMIN";
+    field public static final java.lang.String EXTRA_PROVISIONING_ACCOUNT_TO_MIGRATE = "android.app.extra.PROVISIONING_ACCOUNT_TO_MIGRATE";
     field public static final java.lang.String EXTRA_PROVISIONING_ADMIN_EXTRAS_BUNDLE = "android.app.extra.PROVISIONING_ADMIN_EXTRAS_BUNDLE";
     field public static final java.lang.String EXTRA_PROVISIONING_DEVICE_ADMIN_PACKAGE_CHECKSUM = "android.app.extra.PROVISIONING_DEVICE_ADMIN_PACKAGE_CHECKSUM";
     field public static final java.lang.String EXTRA_PROVISIONING_DEVICE_ADMIN_PACKAGE_DOWNLOAD_COOKIE_HEADER = "android.app.extra.PROVISIONING_DEVICE_ADMIN_PACKAGE_DOWNLOAD_COOKIE_HEADER";
@@ -35923,24 +35926,25 @@
     enum_constant public static final android.webkit.ConsoleMessage.MessageLevel WARNING;
   }
 
-  public class CookieManager {
-    method public synchronized boolean acceptCookie();
-    method public boolean acceptThirdPartyCookies(android.webkit.WebView);
+  public abstract class CookieManager {
+    ctor public CookieManager();
+    method public abstract boolean acceptCookie();
+    method public abstract boolean acceptThirdPartyCookies(android.webkit.WebView);
     method public static boolean allowFileSchemeCookies();
-    method public void flush();
-    method public java.lang.String getCookie(java.lang.String);
+    method public abstract void flush();
+    method public abstract java.lang.String getCookie(java.lang.String);
     method public static synchronized android.webkit.CookieManager getInstance();
-    method public synchronized boolean hasCookies();
-    method public deprecated void removeAllCookie();
-    method public void removeAllCookies(android.webkit.ValueCallback<java.lang.Boolean>);
-    method public deprecated void removeExpiredCookie();
-    method public deprecated void removeSessionCookie();
-    method public void removeSessionCookies(android.webkit.ValueCallback<java.lang.Boolean>);
-    method public synchronized void setAcceptCookie(boolean);
+    method public abstract boolean hasCookies();
+    method public abstract deprecated void removeAllCookie();
+    method public abstract void removeAllCookies(android.webkit.ValueCallback<java.lang.Boolean>);
+    method public abstract deprecated void removeExpiredCookie();
+    method public abstract deprecated void removeSessionCookie();
+    method public abstract void removeSessionCookies(android.webkit.ValueCallback<java.lang.Boolean>);
+    method public abstract void setAcceptCookie(boolean);
     method public static void setAcceptFileSchemeCookies(boolean);
-    method public void setAcceptThirdPartyCookies(android.webkit.WebView, boolean);
-    method public void setCookie(java.lang.String, java.lang.String);
-    method public void setCookie(java.lang.String, java.lang.String, android.webkit.ValueCallback<java.lang.Boolean>);
+    method public abstract void setAcceptThirdPartyCookies(android.webkit.WebView, boolean);
+    method public abstract void setCookie(java.lang.String, java.lang.String);
+    method public abstract void setCookie(java.lang.String, java.lang.String, android.webkit.ValueCallback<java.lang.Boolean>);
   }
 
   public final deprecated class CookieSyncManager extends android.webkit.WebSyncManager {
@@ -36049,11 +36053,13 @@
     method public abstract void onReceiveValue(T);
   }
 
-  public class WebBackForwardList implements java.lang.Cloneable java.io.Serializable {
-    method public synchronized int getCurrentIndex();
-    method public synchronized android.webkit.WebHistoryItem getCurrentItem();
-    method public synchronized android.webkit.WebHistoryItem getItemAtIndex(int);
-    method public synchronized int getSize();
+  public abstract class WebBackForwardList implements java.lang.Cloneable java.io.Serializable {
+    ctor public WebBackForwardList();
+    method protected abstract android.webkit.WebBackForwardList clone();
+    method public abstract int getCurrentIndex();
+    method public abstract android.webkit.WebHistoryItem getCurrentItem();
+    method public abstract android.webkit.WebHistoryItem getItemAtIndex(int);
+    method public abstract int getSize();
   }
 
   public class WebChromeClient {
@@ -36105,21 +36111,24 @@
     field public static final int MODE_SAVE = 3; // 0x3
   }
 
-  public class WebHistoryItem implements java.lang.Cloneable {
-    method public android.graphics.Bitmap getFavicon();
-    method public java.lang.String getOriginalUrl();
-    method public java.lang.String getTitle();
-    method public java.lang.String getUrl();
+  public abstract class WebHistoryItem implements java.lang.Cloneable {
+    ctor public WebHistoryItem();
+    method protected abstract android.webkit.WebHistoryItem clone();
+    method public abstract android.graphics.Bitmap getFavicon();
+    method public abstract java.lang.String getOriginalUrl();
+    method public abstract java.lang.String getTitle();
+    method public abstract java.lang.String getUrl();
   }
 
-  public deprecated class WebIconDatabase {
-    method public void close();
+  public abstract deprecated class WebIconDatabase {
+    ctor public WebIconDatabase();
+    method public abstract void close();
     method public static android.webkit.WebIconDatabase getInstance();
-    method public void open(java.lang.String);
-    method public void releaseIconForPageUrl(java.lang.String);
-    method public void removeAllIcons();
-    method public void requestIconForPageUrl(java.lang.String, android.webkit.WebIconDatabase.IconListener);
-    method public void retainIconForPageUrl(java.lang.String);
+    method public abstract void open(java.lang.String);
+    method public abstract void releaseIconForPageUrl(java.lang.String);
+    method public abstract void removeAllIcons();
+    method public abstract void requestIconForPageUrl(java.lang.String, android.webkit.WebIconDatabase.IconListener);
+    method public abstract void retainIconForPageUrl(java.lang.String);
   }
 
   public static abstract deprecated interface WebIconDatabase.IconListener {
@@ -36151,98 +36160,99 @@
   }
 
   public abstract class WebSettings {
-    method public deprecated boolean enableSmoothTransition();
-    method public boolean getAllowContentAccess();
-    method public boolean getAllowFileAccess();
+    ctor public WebSettings();
+    method public abstract deprecated boolean enableSmoothTransition();
+    method public abstract boolean getAllowContentAccess();
+    method public abstract boolean getAllowFileAccess();
     method public abstract boolean getAllowFileAccessFromFileURLs();
     method public abstract boolean getAllowUniversalAccessFromFileURLs();
-    method public synchronized boolean getBlockNetworkImage();
-    method public synchronized boolean getBlockNetworkLoads();
-    method public boolean getBuiltInZoomControls();
-    method public int getCacheMode();
-    method public synchronized java.lang.String getCursiveFontFamily();
-    method public synchronized boolean getDatabaseEnabled();
-    method public deprecated synchronized java.lang.String getDatabasePath();
-    method public synchronized int getDefaultFixedFontSize();
-    method public synchronized int getDefaultFontSize();
-    method public synchronized java.lang.String getDefaultTextEncodingName();
+    method public abstract boolean getBlockNetworkImage();
+    method public abstract boolean getBlockNetworkLoads();
+    method public abstract boolean getBuiltInZoomControls();
+    method public abstract int getCacheMode();
+    method public abstract java.lang.String getCursiveFontFamily();
+    method public abstract boolean getDatabaseEnabled();
+    method public abstract deprecated java.lang.String getDatabasePath();
+    method public abstract int getDefaultFixedFontSize();
+    method public abstract int getDefaultFontSize();
+    method public abstract java.lang.String getDefaultTextEncodingName();
     method public static java.lang.String getDefaultUserAgent(android.content.Context);
-    method public deprecated android.webkit.WebSettings.ZoomDensity getDefaultZoom();
-    method public boolean getDisplayZoomControls();
-    method public synchronized boolean getDomStorageEnabled();
-    method public synchronized java.lang.String getFantasyFontFamily();
-    method public synchronized java.lang.String getFixedFontFamily();
-    method public synchronized boolean getJavaScriptCanOpenWindowsAutomatically();
-    method public synchronized boolean getJavaScriptEnabled();
-    method public synchronized android.webkit.WebSettings.LayoutAlgorithm getLayoutAlgorithm();
-    method public deprecated boolean getLightTouchEnabled();
-    method public boolean getLoadWithOverviewMode();
-    method public synchronized boolean getLoadsImagesAutomatically();
-    method public boolean getMediaPlaybackRequiresUserGesture();
-    method public synchronized int getMinimumFontSize();
-    method public synchronized int getMinimumLogicalFontSize();
+    method public abstract deprecated android.webkit.WebSettings.ZoomDensity getDefaultZoom();
+    method public abstract boolean getDisplayZoomControls();
+    method public abstract boolean getDomStorageEnabled();
+    method public abstract java.lang.String getFantasyFontFamily();
+    method public abstract java.lang.String getFixedFontFamily();
+    method public abstract boolean getJavaScriptCanOpenWindowsAutomatically();
+    method public abstract boolean getJavaScriptEnabled();
+    method public abstract android.webkit.WebSettings.LayoutAlgorithm getLayoutAlgorithm();
+    method public abstract deprecated boolean getLightTouchEnabled();
+    method public abstract boolean getLoadWithOverviewMode();
+    method public abstract boolean getLoadsImagesAutomatically();
+    method public abstract boolean getMediaPlaybackRequiresUserGesture();
+    method public abstract int getMinimumFontSize();
+    method public abstract int getMinimumLogicalFontSize();
     method public abstract int getMixedContentMode();
-    method public deprecated synchronized android.webkit.WebSettings.PluginState getPluginState();
-    method public synchronized java.lang.String getSansSerifFontFamily();
-    method public boolean getSaveFormData();
-    method public deprecated boolean getSavePassword();
-    method public synchronized java.lang.String getSerifFontFamily();
-    method public synchronized java.lang.String getStandardFontFamily();
+    method public abstract deprecated android.webkit.WebSettings.PluginState getPluginState();
+    method public abstract java.lang.String getSansSerifFontFamily();
+    method public abstract boolean getSaveFormData();
+    method public abstract deprecated boolean getSavePassword();
+    method public abstract java.lang.String getSerifFontFamily();
+    method public abstract java.lang.String getStandardFontFamily();
     method public deprecated synchronized android.webkit.WebSettings.TextSize getTextSize();
-    method public synchronized int getTextZoom();
-    method public synchronized boolean getUseWideViewPort();
-    method public synchronized java.lang.String getUserAgentString();
-    method public void setAllowContentAccess(boolean);
-    method public void setAllowFileAccess(boolean);
+    method public abstract int getTextZoom();
+    method public abstract boolean getUseWideViewPort();
+    method public abstract java.lang.String getUserAgentString();
+    method public abstract void setAllowContentAccess(boolean);
+    method public abstract void setAllowFileAccess(boolean);
     method public abstract void setAllowFileAccessFromFileURLs(boolean);
     method public abstract void setAllowUniversalAccessFromFileURLs(boolean);
-    method public synchronized void setAppCacheEnabled(boolean);
-    method public deprecated synchronized void setAppCacheMaxSize(long);
-    method public synchronized void setAppCachePath(java.lang.String);
-    method public synchronized void setBlockNetworkImage(boolean);
-    method public synchronized void setBlockNetworkLoads(boolean);
-    method public void setBuiltInZoomControls(boolean);
-    method public void setCacheMode(int);
-    method public synchronized void setCursiveFontFamily(java.lang.String);
-    method public synchronized void setDatabaseEnabled(boolean);
-    method public deprecated synchronized void setDatabasePath(java.lang.String);
-    method public synchronized void setDefaultFixedFontSize(int);
-    method public synchronized void setDefaultFontSize(int);
-    method public synchronized void setDefaultTextEncodingName(java.lang.String);
-    method public deprecated void setDefaultZoom(android.webkit.WebSettings.ZoomDensity);
-    method public void setDisplayZoomControls(boolean);
-    method public synchronized void setDomStorageEnabled(boolean);
-    method public deprecated void setEnableSmoothTransition(boolean);
-    method public synchronized void setFantasyFontFamily(java.lang.String);
-    method public synchronized void setFixedFontFamily(java.lang.String);
-    method public synchronized void setGeolocationDatabasePath(java.lang.String);
-    method public synchronized void setGeolocationEnabled(boolean);
-    method public synchronized void setJavaScriptCanOpenWindowsAutomatically(boolean);
-    method public synchronized void setJavaScriptEnabled(boolean);
-    method public synchronized void setLayoutAlgorithm(android.webkit.WebSettings.LayoutAlgorithm);
-    method public deprecated void setLightTouchEnabled(boolean);
-    method public void setLoadWithOverviewMode(boolean);
-    method public synchronized void setLoadsImagesAutomatically(boolean);
-    method public void setMediaPlaybackRequiresUserGesture(boolean);
-    method public synchronized void setMinimumFontSize(int);
-    method public synchronized void setMinimumLogicalFontSize(int);
+    method public abstract void setAppCacheEnabled(boolean);
+    method public abstract deprecated void setAppCacheMaxSize(long);
+    method public abstract void setAppCachePath(java.lang.String);
+    method public abstract void setBlockNetworkImage(boolean);
+    method public abstract void setBlockNetworkLoads(boolean);
+    method public abstract void setBuiltInZoomControls(boolean);
+    method public abstract void setCacheMode(int);
+    method public abstract void setCursiveFontFamily(java.lang.String);
+    method public abstract void setDatabaseEnabled(boolean);
+    method public abstract deprecated void setDatabasePath(java.lang.String);
+    method public abstract void setDefaultFixedFontSize(int);
+    method public abstract void setDefaultFontSize(int);
+    method public abstract void setDefaultTextEncodingName(java.lang.String);
+    method public abstract deprecated void setDefaultZoom(android.webkit.WebSettings.ZoomDensity);
+    method public abstract void setDisplayZoomControls(boolean);
+    method public abstract void setDomStorageEnabled(boolean);
+    method public abstract deprecated void setEnableSmoothTransition(boolean);
+    method public abstract void setFantasyFontFamily(java.lang.String);
+    method public abstract void setFixedFontFamily(java.lang.String);
+    method public abstract void setGeolocationDatabasePath(java.lang.String);
+    method public abstract void setGeolocationEnabled(boolean);
+    method public abstract void setJavaScriptCanOpenWindowsAutomatically(boolean);
+    method public abstract void setJavaScriptEnabled(boolean);
+    method public abstract void setLayoutAlgorithm(android.webkit.WebSettings.LayoutAlgorithm);
+    method public abstract deprecated void setLightTouchEnabled(boolean);
+    method public abstract void setLoadWithOverviewMode(boolean);
+    method public abstract void setLoadsImagesAutomatically(boolean);
+    method public abstract void setMediaPlaybackRequiresUserGesture(boolean);
+    method public abstract void setMinimumFontSize(int);
+    method public abstract void setMinimumLogicalFontSize(int);
     method public abstract void setMixedContentMode(int);
-    method public void setNeedInitialFocus(boolean);
-    method public deprecated synchronized void setPluginState(android.webkit.WebSettings.PluginState);
-    method public deprecated synchronized void setRenderPriority(android.webkit.WebSettings.RenderPriority);
-    method public synchronized void setSansSerifFontFamily(java.lang.String);
-    method public void setSaveFormData(boolean);
-    method public deprecated void setSavePassword(boolean);
-    method public synchronized void setSerifFontFamily(java.lang.String);
-    method public synchronized void setStandardFontFamily(java.lang.String);
-    method public synchronized void setSupportMultipleWindows(boolean);
-    method public void setSupportZoom(boolean);
+    method public abstract void setNeedInitialFocus(boolean);
+    method public abstract deprecated void setPluginState(android.webkit.WebSettings.PluginState);
+    method public abstract deprecated void setRenderPriority(android.webkit.WebSettings.RenderPriority);
+    method public abstract void setSansSerifFontFamily(java.lang.String);
+    method public abstract void setSaveFormData(boolean);
+    method public abstract deprecated void setSavePassword(boolean);
+    method public abstract void setSerifFontFamily(java.lang.String);
+    method public abstract void setStandardFontFamily(java.lang.String);
+    method public abstract void setSupportMultipleWindows(boolean);
+    method public abstract void setSupportZoom(boolean);
     method public deprecated synchronized void setTextSize(android.webkit.WebSettings.TextSize);
-    method public synchronized void setTextZoom(int);
-    method public synchronized void setUseWideViewPort(boolean);
-    method public synchronized void setUserAgentString(java.lang.String);
-    method public synchronized boolean supportMultipleWindows();
-    method public boolean supportZoom();
+    method public abstract void setTextZoom(int);
+    method public abstract void setUseWideViewPort(boolean);
+    method public abstract void setUserAgentString(java.lang.String);
+    method public abstract boolean supportMultipleWindows();
+    method public abstract boolean supportZoom();
     field public static final int LOAD_CACHE_ELSE_NETWORK = 1; // 0x1
     field public static final int LOAD_CACHE_ONLY = 3; // 0x3
     field public static final int LOAD_DEFAULT = -1; // 0xffffffff
@@ -36492,14 +36502,15 @@
     field public static final int ERROR_UNSUPPORTED_SCHEME = -10; // 0xfffffff6
   }
 
-  public class WebViewDatabase {
-    method public void clearFormData();
-    method public void clearHttpAuthUsernamePassword();
-    method public deprecated void clearUsernamePassword();
+  public abstract class WebViewDatabase {
+    ctor public WebViewDatabase();
+    method public abstract void clearFormData();
+    method public abstract void clearHttpAuthUsernamePassword();
+    method public abstract deprecated void clearUsernamePassword();
     method public static android.webkit.WebViewDatabase getInstance(android.content.Context);
-    method public boolean hasFormData();
-    method public boolean hasHttpAuthUsernamePassword();
-    method public deprecated boolean hasUsernamePassword();
+    method public abstract boolean hasFormData();
+    method public abstract boolean hasHttpAuthUsernamePassword();
+    method public abstract deprecated boolean hasUsernamePassword();
   }
 
   public class WebViewFragment extends android.app.Fragment {
diff --git a/core/java/android/accounts/AccountManager.java b/core/java/android/accounts/AccountManager.java
index 09b484b..64c2fd0 100644
--- a/core/java/android/accounts/AccountManager.java
+++ b/core/java/android/accounts/AccountManager.java
@@ -17,37 +17,37 @@
 package android.accounts;
 
 import android.app.Activity;
-import android.content.Intent;
+import android.content.BroadcastReceiver;
 import android.content.ComponentName;
 import android.content.Context;
+import android.content.Intent;
 import android.content.IntentFilter;
-import android.content.BroadcastReceiver;
 import android.content.res.Resources;
 import android.database.SQLException;
+import android.os.Build;
 import android.os.Bundle;
 import android.os.Handler;
 import android.os.Looper;
-import android.os.RemoteException;
 import android.os.Parcelable;
-import android.os.Build;
 import android.os.Process;
+import android.os.RemoteException;
 import android.os.UserHandle;
-import android.util.Log;
 import android.text.TextUtils;
+import android.util.Log;
+
+import com.android.internal.R;
+import com.google.android.collect.Maps;
 
 import java.io.IOException;
 import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.Map;
 import java.util.concurrent.Callable;
 import java.util.concurrent.CancellationException;
 import java.util.concurrent.ExecutionException;
 import java.util.concurrent.FutureTask;
-import java.util.concurrent.TimeoutException;
 import java.util.concurrent.TimeUnit;
-import java.util.HashMap;
-import java.util.Map;
-
-import com.android.internal.R;
-import com.google.android.collect.Maps;
+import java.util.concurrent.TimeoutException;
 
 /**
  * This class provides access to a centralized registry of the user's
@@ -747,13 +747,17 @@
      *     null for the main thread
      * @return An {@link AccountManagerFuture} which resolves to a Boolean,
      *     true if the account has been successfully removed
+     * @deprecated use
+     *     {@link #removeAccount(Account, Activity, AccountManagerCallback, Handler)}
+     *     instead
      */
+    @Deprecated
     public AccountManagerFuture<Boolean> removeAccount(final Account account,
             AccountManagerCallback<Boolean> callback, Handler handler) {
         if (account == null) throw new IllegalArgumentException("account is null");
         return new Future2Task<Boolean>(handler, callback) {
             public void doWork() throws RemoteException {
-                mService.removeAccount(mResponse, account);
+                mService.removeAccount(mResponse, account, false);
             }
             public Boolean bundleToResult(Bundle bundle) throws AuthenticatorException {
                 if (!bundle.containsKey(KEY_BOOLEAN_RESULT)) {
@@ -765,9 +769,60 @@
     }
 
     /**
+     * Removes an account from the AccountManager. Does nothing if the account
+     * does not exist.  Does not delete the account from the server.
+     * The authenticator may have its own policies preventing account
+     * deletion, in which case the account will not be deleted.
+     *
+     * <p>This method may be called from any thread, but the returned
+     * {@link AccountManagerFuture} must not be used on the main thread.
+     *
+     * <p>This method requires the caller to hold the permission
+     * {@link android.Manifest.permission#MANAGE_ACCOUNTS}.
+     *
+     * @param account The {@link Account} to remove
+     * @param activity The {@link Activity} context to use for launching a new
+     *     authenticator-defined sub-Activity to prompt the user to delete an
+     *     account; used only to call startActivity(); if null, the prompt
+     *     will not be launched directly, but the {@link Intent} may be
+     *     returned to the caller instead
+     * @param callback Callback to invoke when the request completes,
+     *     null for no callback
+     * @param handler {@link Handler} identifying the callback thread,
+     *     null for the main thread
+     * @return An {@link AccountManagerFuture} which resolves to a Bundle with
+     *     {@link #KEY_BOOLEAN_RESULT} if activity was specified and an account
+     *     was removed or if active. If no activity was specified, the returned
+     *     Bundle contains only {@link #KEY_INTENT} with the {@link Intent}
+     *     needed to launch the actual account removal process, if authenticator
+     *     needs the activity launch. If an error occurred,
+     *     {@link AccountManagerFuture#getResult()} throws:
+     * <ul>
+     * <li> {@link AuthenticatorException} if no authenticator was registered for
+     *      this account type or the authenticator failed to respond
+     * <li> {@link OperationCanceledException} if the operation was canceled for
+     *      any reason, including the user canceling the creation process or
+     *      adding accounts (of this type) has been disabled by policy
+     * </ul>
+     */
+    public AccountManagerFuture<Bundle> removeAccount(final Account account,
+            final Activity activity, AccountManagerCallback<Bundle> callback, Handler handler) {
+        if (account == null) throw new IllegalArgumentException("account is null");
+        return new AmsTask(activity, handler, callback) {
+            public void doWork() throws RemoteException {
+                mService.removeAccount(mResponse, account, activity != null);
+            }
+        }.start();
+    }
+
+    /**
      * @see #removeAccount(Account, AccountManagerCallback, Handler)
      * @hide
+     * @deprecated use
+     *     {@link #removeAccountAsUser(Account, Activity, AccountManagerCallback, Handler)}
+     *     instead
      */
+    @Deprecated
     public AccountManagerFuture<Boolean> removeAccountAsUser(final Account account,
             AccountManagerCallback<Boolean> callback, Handler handler,
             final UserHandle userHandle) {
@@ -775,7 +830,7 @@
         if (userHandle == null) throw new IllegalArgumentException("userHandle is null");
         return new Future2Task<Boolean>(handler, callback) {
             public void doWork() throws RemoteException {
-                mService.removeAccountAsUser(mResponse, account, userHandle.getIdentifier());
+                mService.removeAccountAsUser(mResponse, account, false, userHandle.getIdentifier());
             }
             public Boolean bundleToResult(Bundle bundle) throws AuthenticatorException {
                 if (!bundle.containsKey(KEY_BOOLEAN_RESULT)) {
@@ -787,6 +842,52 @@
     }
 
     /**
+     * @see #removeAccount(Account, Activity, AccountManagerCallback, Handler)
+     * @hide
+     */
+    public AccountManagerFuture<Bundle> removeAccountAsUser(final Account account,
+            final Activity activity, AccountManagerCallback<Bundle> callback, Handler handler,
+            final UserHandle userHandle) {
+        if (account == null)
+            throw new IllegalArgumentException("account is null");
+        if (userHandle == null)
+            throw new IllegalArgumentException("userHandle is null");
+        return new AmsTask(activity, handler, callback) {
+            public void doWork() throws RemoteException {
+                mService.removeAccountAsUser(mResponse, account, activity != null,
+                        userHandle.getIdentifier());
+            }
+        }.start();
+    }
+
+    /**
+     * Removes an account directly. Normally used by authenticators, not
+     * directly by applications. Does not delete the account from the server.
+     * The authenticator may have its own policies preventing account deletion,
+     * in which case the account will not be deleted.
+     * <p>
+     * It is safe to call this method from the main thread.
+     * <p>
+     * This method requires the caller to hold the permission
+     * {@link android.Manifest.permission#AUTHENTICATE_ACCOUNTS} and to have the
+     * same UID or signature as the account's authenticator.
+     *
+     * @param account The {@link Account} to delete.
+     * @return True if the account was successfully deleted, false if the
+     *         account did not exist, the account is null, or another error
+     *         occurs.
+     */
+    public boolean removeAccountExplicitly(Account account) {
+        if (account == null) throw new IllegalArgumentException("account is null");
+        try {
+            return mService.removeAccountExplicitly(account);
+        } catch (RemoteException e) {
+            // won't ever happen
+            throw new RuntimeException(e);
+        }
+    }
+
+    /**
      * Removes an auth token from the AccountManager's cache.  Does nothing if
      * the auth token is not currently in the cache.  Applications must call this
      * method when the auth token is found to have expired or otherwise become
diff --git a/core/java/android/accounts/IAccountManager.aidl b/core/java/android/accounts/IAccountManager.aidl
index a133788..bc75b9b 100644
--- a/core/java/android/accounts/IAccountManager.aidl
+++ b/core/java/android/accounts/IAccountManager.aidl
@@ -37,8 +37,11 @@
     void hasFeatures(in IAccountManagerResponse response, in Account account, in String[] features);
     void getAccountsByFeatures(in IAccountManagerResponse response, String accountType, in String[] features);
     boolean addAccountExplicitly(in Account account, String password, in Bundle extras);
-    void removeAccount(in IAccountManagerResponse response, in Account account);
-    void removeAccountAsUser(in IAccountManagerResponse response, in Account account, int userId);
+    void removeAccount(in IAccountManagerResponse response, in Account account,
+        boolean expectActivityLaunch);
+    void removeAccountAsUser(in IAccountManagerResponse response, in Account account,
+        boolean expectActivityLaunch, int userId);
+    boolean removeAccountExplicitly(in Account account);
     void invalidateAuthToken(String accountType, String authToken);
     String peekAuthToken(in Account account, String authTokenType);
     void setAuthToken(in Account account, String authTokenType, String authToken);
diff --git a/core/java/android/app/admin/DevicePolicyManager.java b/core/java/android/app/admin/DevicePolicyManager.java
index 33cac75..756e51f 100644
--- a/core/java/android/app/admin/DevicePolicyManager.java
+++ b/core/java/android/app/admin/DevicePolicyManager.java
@@ -149,6 +149,17 @@
         = "android.app.extra.PROVISIONING_DEVICE_ADMIN_PACKAGE_NAME";
 
     /**
+     * An {@link android.accounts.Account} extra holding the account to migrate during managed
+     * profile provisioning. If the account supplied is present in the primary user, it will be
+     * copied, along with its credentials to the managed profile and removed from the primary user.
+     *
+     * Use with {@link #ACTION_PROVISION_MANAGED_PROFILE}.
+     */
+
+    public static final String EXTRA_PROVISIONING_ACCOUNT_TO_MIGRATE
+        = "android.app.extra.PROVISIONING_ACCOUNT_TO_MIGRATE";
+
+    /**
      * A String extra that, holds the email address of the account which a managed profile is
      * created for. Used with {@link #ACTION_PROVISION_MANAGED_PROFILE} and
      * {@link DeviceAdminReceiver#ACTION_PROFILE_PROVISIONING_COMPLETE}.
diff --git a/core/java/android/net/WebAddress.java b/core/java/android/net/WebAddress.java
index 8126b75..24d4eb8 100644
--- a/core/java/android/net/WebAddress.java
+++ b/core/java/android/net/WebAddress.java
@@ -18,6 +18,8 @@
 
 import static android.util.Patterns.GOOD_IRI_CHAR;
 
+import android.annotation.SystemApi;
+
 import java.util.Locale;
 import java.util.regex.Matcher;
 import java.util.regex.Pattern;
@@ -38,6 +40,9 @@
  * If given an https scheme but no port, fills in port
  *
  */
+// TODO(igsolla): remove WebAddress from the system SDK once the WebView apk does not
+// longer need to be binary compatible with the API 21 version of the framework.
+@SystemApi
 public class WebAddress {
 
     private String mScheme;
@@ -136,42 +141,52 @@
         return mScheme + "://" + authInfo + mHost + port + mPath;
     }
 
+    /** {@hide} */
     public void setScheme(String scheme) {
       mScheme = scheme;
     }
 
+    /** {@hide} */
     public String getScheme() {
       return mScheme;
     }
 
+    /** {@hide} */
     public void setHost(String host) {
       mHost = host;
     }
 
+    /** {@hide} */
     public String getHost() {
       return mHost;
     }
 
+    /** {@hide} */
     public void setPort(int port) {
       mPort = port;
     }
 
+    /** {@hide} */
     public int getPort() {
       return mPort;
     }
 
+    /** {@hide} */
     public void setPath(String path) {
       mPath = path;
     }
 
+    /** {@hide} */
     public String getPath() {
       return mPath;
     }
 
+    /** {@hide} */
     public void setAuthInfo(String authInfo) {
       mAuthInfo = authInfo;
     }
 
+    /** {@hide} */
     public String getAuthInfo() {
       return mAuthInfo;
     }
diff --git a/core/java/android/view/InputEvent.java b/core/java/android/view/InputEvent.java
index 1ecdf30..e2ad3ad 100644
--- a/core/java/android/view/InputEvent.java
+++ b/core/java/android/view/InputEvent.java
@@ -196,6 +196,13 @@
     public abstract long getEventTimeNano();
 
     /**
+     * Marks the input event as being canceled.
+     *
+     * @hide
+     */
+    public abstract void cancel();
+
+    /**
      * Gets the unique sequence number of this event.
      * Every input event that is created or received by a process has a
      * unique sequence number.  Moreover, a new sequence number is obtained
diff --git a/core/java/android/view/KeyEvent.java b/core/java/android/view/KeyEvent.java
index 0701b53..243a0fc 100644
--- a/core/java/android/view/KeyEvent.java
+++ b/core/java/android/view/KeyEvent.java
@@ -2304,6 +2304,16 @@
     }
 
     /**
+     * Set {@link #FLAG_CANCELED} flag for the key event.
+     *
+     * @hide
+     */
+    @Override
+    public final void cancel() {
+        mFlags |= FLAG_CANCELED;
+    }
+
+    /**
      * Call this during {@link Callback#onKeyDown} to have the system track
      * the key through its final up (possibly including a long press).  Note
      * that only one key can be tracked at a time -- if another key down
diff --git a/core/java/android/view/MotionEvent.java b/core/java/android/view/MotionEvent.java
index ae39b7a..1c5c41c 100644
--- a/core/java/android/view/MotionEvent.java
+++ b/core/java/android/view/MotionEvent.java
@@ -3168,6 +3168,12 @@
         return ev;
     }
 
+    /** @hide */
+    @Override
+    public final void cancel() {
+        setAction(ACTION_CANCEL);
+    }
+
     public void writeToParcel(Parcel out, int flags) {
         out.writeInt(PARCEL_TOKEN_MOTION_EVENT);
         nativeWriteToParcel(mNativePtr, out);
diff --git a/core/java/android/view/View.java b/core/java/android/view/View.java
index 9c378cf..5fc37c0 100644
--- a/core/java/android/view/View.java
+++ b/core/java/android/view/View.java
@@ -13174,7 +13174,7 @@
         }
         // Should resolve Drawables before Padding because we need the layout direction of the
         // Drawable to correctly resolve Padding.
-        if (!isDrawablesResolved()) {
+        if (!areDrawablesResolved()) {
             resolveDrawables();
         }
         if (!isPaddingResolved()) {
@@ -13438,6 +13438,14 @@
      * @hide
      */
     public void resetResolvedPadding() {
+        resetResolvedPaddingInternal();
+    }
+
+    /**
+     * Used when we only want to reset *this* view's padding and not trigger overrides
+     * in ViewGroup that reset children too.
+     */
+    void resetResolvedPaddingInternal() {
         mPrivateFlags2 &= ~PFLAG2_PADDING_RESOLVED;
     }
 
@@ -15974,6 +15982,10 @@
         onResolveDrawables(layoutDirection);
     }
 
+    boolean areDrawablesResolved() {
+        return (mPrivateFlags2 & PFLAG2_DRAWABLE_RESOLVED) == PFLAG2_DRAWABLE_RESOLVED;
+    }
+
     /**
      * Called when layout direction has been resolved.
      *
@@ -15993,11 +16005,11 @@
      * @hide
      */
     protected void resetResolvedDrawables() {
-        mPrivateFlags2 &= ~PFLAG2_DRAWABLE_RESOLVED;
+        resetResolvedDrawablesInternal();
     }
 
-    private boolean isDrawablesResolved() {
-        return (mPrivateFlags2 & PFLAG2_DRAWABLE_RESOLVED) == PFLAG2_DRAWABLE_RESOLVED;
+    void resetResolvedDrawablesInternal() {
+        mPrivateFlags2 &= ~PFLAG2_DRAWABLE_RESOLVED;
     }
 
     /**
@@ -16297,10 +16309,10 @@
                 padding = new Rect();
                 sThreadLocal.set(padding);
             }
-            resetResolvedDrawables();
+            resetResolvedDrawablesInternal();
             background.setLayoutDirection(getLayoutDirection());
             if (background.getPadding(padding)) {
-                resetResolvedPadding();
+                resetResolvedPaddingInternal();
                 switch (background.getLayoutDirection()) {
                     case LAYOUT_DIRECTION_RTL:
                         mUserPaddingLeftInitial = padding.right;
@@ -16500,7 +16512,7 @@
      * @param bottom the bottom padding in pixels
      */
     public void setPadding(int left, int top, int right, int bottom) {
-        resetResolvedPadding();
+        resetResolvedPaddingInternal();
 
         mUserPaddingStart = UNDEFINED_PADDING;
         mUserPaddingEnd = UNDEFINED_PADDING;
@@ -16592,7 +16604,7 @@
      * @param bottom the bottom padding in pixels
      */
     public void setPaddingRelative(int start, int top, int end, int bottom) {
-        resetResolvedPadding();
+        resetResolvedPaddingInternal();
 
         mUserPaddingStart = start;
         mUserPaddingEnd = end;
diff --git a/core/java/android/view/ViewGroup.java b/core/java/android/view/ViewGroup.java
index b47ca37..bae0b12 100644
--- a/core/java/android/view/ViewGroup.java
+++ b/core/java/android/view/ViewGroup.java
@@ -6150,7 +6150,7 @@
         int count = getChildCount();
         for (int i = 0; i < count; i++) {
             final View child = getChildAt(i);
-            if (child.isLayoutDirectionInherited()) {
+            if (child.isLayoutDirectionInherited() && !child.isPaddingResolved()) {
                 child.resolvePadding();
             }
         }
@@ -6165,7 +6165,7 @@
         int count = getChildCount();
         for (int i = 0; i < count; i++) {
             final View child = getChildAt(i);
-            if (child.isLayoutDirectionInherited()) {
+            if (child.isLayoutDirectionInherited() && !child.areDrawablesResolved()) {
                 child.resolveDrawables();
             }
         }
diff --git a/core/java/android/view/ViewRootImpl.java b/core/java/android/view/ViewRootImpl.java
index 5d2a24b..fe17417 100644
--- a/core/java/android/view/ViewRootImpl.java
+++ b/core/java/android/view/ViewRootImpl.java
@@ -3596,12 +3596,19 @@
             if (mView == null || !mAdded) {
                 Slog.w(TAG, "Dropping event due to root view being removed: " + q.mEvent);
                 return true;
-            } else if (!mAttachInfo.mHasWindowFocus &&
-                  !q.mEvent.isFromSource(InputDevice.SOURCE_CLASS_POINTER) &&
-                  !isTerminalInputEvent(q.mEvent)) {
-                // If this is a focused event and the window doesn't currently have input focus,
-                // then drop this event.  This could be an event that came back from the previous
-                // stage but the window has lost focus in the meantime.
+            } else if ((!mAttachInfo.mHasWindowFocus || mStopped)
+                    && !q.mEvent.isFromSource(InputDevice.SOURCE_CLASS_POINTER)) {
+                // This is a focus event and the window doesn't currently have input focus or
+                // has stopped. This could be an event that came back from the previous stage
+                // but the window has lost focus or stopped in the meantime.
+                if (isTerminalInputEvent(q.mEvent)) {
+                    // Don't drop terminal input events, however mark them as canceled.
+                    q.mEvent.cancel();
+                    Slog.w(TAG, "Cancelling event due to no window focus: " + q.mEvent);
+                    return false;
+                }
+
+                // Drop non-terminal input events.
                 Slog.w(TAG, "Dropping event due to no window focus: " + q.mEvent);
                 return true;
             }
diff --git a/core/java/android/webkit/CookieManager.java b/core/java/android/webkit/CookieManager.java
index 20ef646..eca96f9 100644
--- a/core/java/android/webkit/CookieManager.java
+++ b/core/java/android/webkit/CookieManager.java
@@ -16,18 +16,14 @@
 
 package android.webkit;
 
+import android.annotation.SystemApi;
 import android.net.WebAddress;
 
 /**
  * Manages the cookies used by an application's {@link WebView} instances.
  * Cookies are manipulated according to RFC2109.
  */
-public class CookieManager {
-    /**
-     * @hide Only for use by WebViewProvider implementations
-     */
-    protected CookieManager() {
-    }
+public abstract class CookieManager {
 
     @Override
     protected Object clone() throws CloneNotSupportedException {
@@ -59,9 +55,7 @@
      * @param accept whether {@link WebView} instances should send and accept
      *               cookies
      */
-    public synchronized void setAcceptCookie(boolean accept) {
-        throw new MustOverrideException();
-    }
+    public abstract void setAcceptCookie(boolean accept);
 
     /**
      * Gets whether the application's {@link WebView} instances send and accept
@@ -69,9 +63,7 @@
      *
      * @return true if {@link WebView} instances send and accept cookies
      */
-    public synchronized boolean acceptCookie() {
-        throw new MustOverrideException();
-    }
+    public abstract boolean acceptCookie();
 
    /**
      * Sets whether the {@link WebView} should allow third party cookies to be set.
@@ -87,9 +79,7 @@
      * @param accept whether the {@link WebView} instance should accept
      *               third party cookies
      */
-    public void setAcceptThirdPartyCookies(WebView webview, boolean accept) {
-        throw new MustOverrideException();
-    }
+    public abstract void setAcceptThirdPartyCookies(WebView webview, boolean accept);
 
     /**
      * Gets whether the {@link WebView} should allow third party cookies to be set.
@@ -97,9 +87,7 @@
      * @param webview the {@link WebView} instance to get the cookie policy for
      * @return true if the {@link WebView} accepts third party cookies
      */
-    public boolean acceptThirdPartyCookies(WebView webview) {
-        throw new MustOverrideException();
-    }
+    public abstract boolean acceptThirdPartyCookies(WebView webview);
 
     /**
      * Sets a cookie for the given URL. Any existing cookie with the same host,
@@ -110,9 +98,7 @@
      * @param value the cookie as a string, using the format of the 'Set-Cookie'
      *              HTTP response header
      */
-    public void setCookie(String url, String value) {
-        throw new MustOverrideException();
-    }
+    public abstract void setCookie(String url, String value);
 
     /**
      * Sets a cookie for the given URL. Any existing cookie with the same host,
@@ -133,9 +119,7 @@
      *              HTTP response header
      * @param callback a callback to be executed when the cookie has been set
      */
-    public void setCookie(String url, String value, ValueCallback<Boolean> callback) {
-        throw new MustOverrideException();
-    }
+    public abstract void setCookie(String url, String value, ValueCallback<Boolean> callback);
 
     /**
      * Gets the cookies for the given URL.
@@ -144,9 +128,7 @@
      * @return value the cookies as a string, using the format of the 'Cookie'
      *               HTTP request header
      */
-    public String getCookie(String url) {
-        throw new MustOverrideException();
-    }
+    public abstract String getCookie(String url);
 
     /**
      * See {@link #getCookie(String)}.
@@ -155,11 +137,10 @@
      * @param privateBrowsing whether to use the private browsing cookie jar
      * @return value the cookies as a string, using the format of the 'Cookie'
      *               HTTP request header
-     * @hide Used by Browser, no intention to publish.
+     * @hide Used by Browser and by WebViewProvider implementations.
      */
-    public String getCookie(String url, boolean privateBrowsing) {
-        throw new MustOverrideException();
-    }
+    @SystemApi
+    public abstract String getCookie(String url, boolean privateBrowsing);
 
     /**
      * Gets cookie(s) for a given uri so that it can be set to "cookie:" in http
@@ -168,10 +149,11 @@
      * @param uri the WebAddress for which the cookies are requested
      * @return value the cookies as a string, using the format of the 'Cookie'
      *               HTTP request header
-     * @hide Used by RequestHandle, no intention to publish.
+     * @hide Used by RequestHandle and by WebViewProvider implementations.
      */
+    @SystemApi
     public synchronized String getCookie(WebAddress uri) {
-        throw new MustOverrideException();
+        return getCookie(uri.toString());
     }
 
     /**
@@ -179,9 +161,7 @@
      * date.
      * @deprecated use {@link #removeSessionCookies(ValueCallback)} instead.
      */
-    public void removeSessionCookie() {
-        throw new MustOverrideException();
-    }
+    public abstract void removeSessionCookie();
 
     /**
      * Removes all session cookies, which are cookies without an expiration
@@ -197,18 +177,14 @@
      * method from a thread without a Looper.
      * @param callback a callback which is executed when the session cookies have been removed
      */
-    public void removeSessionCookies(ValueCallback<Boolean> callback) {
-        throw new MustOverrideException();
-    }
+    public abstract void removeSessionCookies(ValueCallback<Boolean> callback);
 
     /**
      * Removes all cookies.
      * @deprecated Use {@link #removeAllCookies(ValueCallback)} instead.
      */
     @Deprecated
-    public void removeAllCookie() {
-        throw new MustOverrideException();
-    }
+    public abstract void removeAllCookie();
 
     /**
      * Removes all cookies.
@@ -223,54 +199,37 @@
      * method from a thread without a Looper.
      * @param callback a callback which is executed when the cookies have been removed
      */
-    public void removeAllCookies(ValueCallback<Boolean> callback) {
-        throw new MustOverrideException();
-    }
+    public abstract void removeAllCookies(ValueCallback<Boolean> callback);
 
     /**
      * Gets whether there are stored cookies.
      *
      * @return true if there are stored cookies
      */
-    public synchronized boolean hasCookies() {
-        throw new MustOverrideException();
-    }
+    public abstract boolean hasCookies();
 
     /**
      * See {@link #hasCookies()}.
      *
      * @param privateBrowsing whether to use the private browsing cookie jar
-     * @hide Used by Browser, no intention to publish.
+     * @hide Used by Browser and WebViewProvider implementations.
      */
-    public synchronized boolean hasCookies(boolean privateBrowsing) {
-        throw new MustOverrideException();
-    }
+    @SystemApi
+    public abstract boolean hasCookies(boolean privateBrowsing);
 
     /**
      * Removes all expired cookies.
      * @deprecated The WebView handles removing expired cookies automatically.
      */
     @Deprecated
-    public void removeExpiredCookie() {
-        throw new MustOverrideException();
-    }
+    public abstract void removeExpiredCookie();
 
     /**
      * Ensures all cookies currently accessible through the getCookie API are
      * written to persistent storage.
      * This call will block the caller until it is done and may perform I/O.
      */
-    public void flush() {
-        flushCookieStore();
-    }
-
-    /**
-     * Flushes all cookies managed by the Chrome HTTP stack to flash.
-     *
-     * @hide Package level api, called from CookieSyncManager
-     */
-    protected void flushCookieStore() {
-    }
+    public abstract void flush();
 
     /**
      * Gets whether the application's {@link WebView} instances send and accept
@@ -289,9 +248,8 @@
      *
      * @hide Only for use by WebViewProvider implementations
      */
-    protected boolean allowFileSchemeCookiesImpl() {
-        throw new MustOverrideException();
-    }
+    @SystemApi
+    protected abstract boolean allowFileSchemeCookiesImpl();
 
     /**
      * Sets whether the application's {@link WebView} instances should send and
@@ -314,7 +272,6 @@
      *
      * @hide Only for use by WebViewProvider implementations
      */
-    protected void setAcceptFileSchemeCookiesImpl(boolean accept) {
-        throw new MustOverrideException();
-    }
+    @SystemApi
+    protected abstract void setAcceptFileSchemeCookiesImpl(boolean accept);
 }
diff --git a/core/java/android/webkit/DebugFlags.java b/core/java/android/webkit/DebugFlags.java
deleted file mode 100644
index 7b3cb1b..0000000
--- a/core/java/android/webkit/DebugFlags.java
+++ /dev/null
@@ -1,37 +0,0 @@
-/*
- * Copyright (C) 2009 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package android.webkit;
-
-/**
- * This class is a container for all of the debug flags used in the Java
- * components of webkit.  These flags must be final in order to ensure that
- * the compiler optimizes the code that uses them out of the final executable.
- *
- * The name of each flags maps directly to the name of the class in which that
- * flag is used.
- *
- * @hide Only used by WebView implementations.
- */
-public class DebugFlags {
-
-    public static final boolean COOKIE_SYNC_MANAGER = false;
-    public static final boolean TRACE_API = false;
-    public static final boolean TRACE_CALLBACK = false;
-    public static final boolean URL_UTIL = false;
-    public static final boolean WEB_SYNC_MANAGER = false;
-
-}
diff --git a/core/java/android/webkit/FindActionModeCallback.java b/core/java/android/webkit/FindActionModeCallback.java
index c68b450..ab6a2f9 100644
--- a/core/java/android/webkit/FindActionModeCallback.java
+++ b/core/java/android/webkit/FindActionModeCallback.java
@@ -16,6 +16,7 @@
 
 package android.webkit;
 
+import android.annotation.SystemApi;
 import android.content.Context;
 import android.content.res.Resources;
 import android.graphics.Point;
@@ -36,6 +37,7 @@
 /**
  * @hide
  */
+@SystemApi
 public class FindActionModeCallback implements ActionMode.Callback, TextWatcher,
         View.OnClickListener, WebView.FindListener {
     private View mCustomView;
diff --git a/core/java/android/webkit/GeolocationPermissions.java b/core/java/android/webkit/GeolocationPermissions.java
index bc3d035..7187f22 100644
--- a/core/java/android/webkit/GeolocationPermissions.java
+++ b/core/java/android/webkit/GeolocationPermissions.java
@@ -16,6 +16,8 @@
 
 package android.webkit;
 
+import android.annotation.SystemApi;
+
 import java.util.Set;
 
 /**
@@ -136,5 +138,6 @@
      * way to call createHandler() and createUIHandler(), so it would not work).
      * @hide Only for use by WebViewProvider implementations
      */
+    @SystemApi
     public GeolocationPermissions() {}
 }
diff --git a/core/java/android/webkit/HttpAuthHandler.java b/core/java/android/webkit/HttpAuthHandler.java
index ee3b3698..45fc1f5 100644
--- a/core/java/android/webkit/HttpAuthHandler.java
+++ b/core/java/android/webkit/HttpAuthHandler.java
@@ -16,6 +16,7 @@
 
 package android.webkit;
 
+import android.annotation.SystemApi;
 import android.os.Handler;
 
 /**
@@ -30,6 +31,7 @@
     /**
      * @hide Only for use by WebViewProvider implementations.
      */
+    @SystemApi
     public HttpAuthHandler() {
     }
 
diff --git a/core/java/android/webkit/JsDialogHelper.java b/core/java/android/webkit/JsDialogHelper.java
index bb0339e..cc475c3 100644
--- a/core/java/android/webkit/JsDialogHelper.java
+++ b/core/java/android/webkit/JsDialogHelper.java
@@ -16,6 +16,7 @@
 
 package android.webkit;
 
+import android.annotation.SystemApi;
 import android.app.Activity;
 import android.app.AlertDialog;
 import android.content.Context;
@@ -34,8 +35,9 @@
  * Helper class to create JavaScript dialogs. It is used by
  * different WebView implementations.
  *
- * @hide Helper class for internal use
+ * @hide
  */
+@SystemApi
 public class JsDialogHelper {
 
     private static final String TAG = "JsDialogHelper";
diff --git a/core/java/android/webkit/JsPromptResult.java b/core/java/android/webkit/JsPromptResult.java
index a1bf124..771cc32 100644
--- a/core/java/android/webkit/JsPromptResult.java
+++ b/core/java/android/webkit/JsPromptResult.java
@@ -16,6 +16,8 @@
 
 package android.webkit;
 
+import android.annotation.SystemApi;
+
 
 /**
  * Public class for handling JavaScript prompt requests. The WebChromeClient will receive a
@@ -39,6 +41,7 @@
     /**
      * @hide Only for use by WebViewProvider implementations
      */
+    @SystemApi
     public JsPromptResult(ResultReceiver receiver) {
         super(receiver);
     }
@@ -46,6 +49,7 @@
     /**
      * @hide Only for use by WebViewProvider implementations
      */
+    @SystemApi
     public String getStringResult() {
         return mStringResult;
     }
diff --git a/core/java/android/webkit/JsResult.java b/core/java/android/webkit/JsResult.java
index e4e6851..d36ab418 100644
--- a/core/java/android/webkit/JsResult.java
+++ b/core/java/android/webkit/JsResult.java
@@ -16,6 +16,8 @@
 
 package android.webkit;
 
+import android.annotation.SystemApi;
+
 /**
  * An instance of this class is passed as a parameter in various {@link WebChromeClient} action
  * notifications. The object is used as a handle onto the underlying JavaScript-originated request,
@@ -27,6 +29,7 @@
      * notifications when the JavaScript result represented by a JsResult instance has
      * @hide Only for use by WebViewProvider implementations
      */
+    @SystemApi
     public interface ResultReceiver {
         public void onJsResultComplete(JsResult result);
     }
@@ -54,6 +57,7 @@
     /**
      * @hide Only for use by WebViewProvider implementations
      */
+    @SystemApi
     public JsResult(ResultReceiver receiver) {
         mReceiver = receiver;
     }
@@ -61,6 +65,7 @@
     /**
      * @hide Only for use by WebViewProvider implementations
      */
+    @SystemApi
     public final boolean getResult() {
         return mResult;
     }
diff --git a/core/java/android/webkit/MustOverrideException.java b/core/java/android/webkit/MustOverrideException.java
deleted file mode 100644
index 0643bf0..0000000
--- a/core/java/android/webkit/MustOverrideException.java
+++ /dev/null
@@ -1,25 +0,0 @@
-/*
- * Copyright (C) 2012 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package android.webkit;
-
-// TODO: Remove MustOverrideException and make all methods throwing it abstract instead;
-// needs API file update.
-class MustOverrideException extends RuntimeException {
-    MustOverrideException() {
-        super("abstract function called: must be overriden!");
-    }
-}
\ No newline at end of file
diff --git a/core/java/android/webkit/SslErrorHandler.java b/core/java/android/webkit/SslErrorHandler.java
index af31544..537065d 100644
--- a/core/java/android/webkit/SslErrorHandler.java
+++ b/core/java/android/webkit/SslErrorHandler.java
@@ -16,6 +16,7 @@
 
 package android.webkit;
 
+import android.annotation.SystemApi;
 import android.os.Handler;
 
 /**
@@ -30,6 +31,7 @@
     /**
      * @hide Only for use by WebViewProvider implementations.
      */
+    @SystemApi
     public SslErrorHandler() {}
 
     /**
diff --git a/core/java/android/webkit/URLUtil.java b/core/java/android/webkit/URLUtil.java
index d115984..f5233b6 100644
--- a/core/java/android/webkit/URLUtil.java
+++ b/core/java/android/webkit/URLUtil.java
@@ -29,6 +29,7 @@
 public final class URLUtil {
 
     private static final String LOGTAG = "webkit";
+    private static final boolean TRACE = false;
 
     // to refer to bar.png under your package's asset/foo/ directory, use
     // "file:///android_asset/foo/bar.png".
@@ -49,7 +50,7 @@
         String retVal = inUrl;
         WebAddress webAddress;
 
-        if (DebugFlags.URL_UTIL) Log.v(LOGTAG, "guessURL before queueRequest: " + inUrl);
+        if (TRACE) Log.v(LOGTAG, "guessURL before queueRequest: " + inUrl);
 
         if (inUrl.length() == 0) return inUrl;
         if (inUrl.startsWith("about:")) return inUrl;
@@ -69,7 +70,7 @@
             webAddress = new WebAddress(inUrl);
         } catch (ParseException ex) {
 
-            if (DebugFlags.URL_UTIL) {
+            if (TRACE) {
                 Log.v(LOGTAG, "smartUrlFilter: failed to parse url = " + inUrl);
             }
             return retVal;
@@ -286,7 +287,7 @@
         }
         return url;
     }
-    
+
     /**
      * Guesses canonical filename that a download would have, using
      * the URL and contentDisposition. File extension, if not defined,
@@ -294,7 +295,7 @@
      * @param url Url to the content
      * @param contentDisposition Content-Disposition HTTP header or null
      * @param mimeType Mime-type of the content or null
-     * 
+     *
      * @return suggested filename
      */
     public static final String guessFileName(
diff --git a/core/java/android/webkit/WebBackForwardList.java b/core/java/android/webkit/WebBackForwardList.java
index bfef2e7..e671376 100644
--- a/core/java/android/webkit/WebBackForwardList.java
+++ b/core/java/android/webkit/WebBackForwardList.java
@@ -16,6 +16,7 @@
 
 package android.webkit;
 
+import android.annotation.SystemApi;
 import java.io.Serializable;
 
 /**
@@ -23,56 +24,38 @@
  * WebView.copyBackForwardList() will return a copy of this class used to
  * inspect the entries in the list.
  */
-public class WebBackForwardList implements Cloneable, Serializable {
-
-    /**
-     *  @hide
-     */
-    public WebBackForwardList() {
-    }
-
+public abstract class WebBackForwardList implements Cloneable, Serializable {
     /**
      * Return the current history item. This method returns null if the list is
      * empty.
      * @return The current history item.
      */
-    public synchronized WebHistoryItem getCurrentItem() {
-        throw new MustOverrideException();
-    }
+    public abstract WebHistoryItem getCurrentItem();
 
     /**
      * Get the index of the current history item. This index can be used to
      * directly index into the array list.
      * @return The current index from 0...n or -1 if the list is empty.
      */
-    public synchronized int getCurrentIndex() {
-        throw new MustOverrideException();
-    }
+    public abstract int getCurrentIndex();
 
     /**
      * Get the history item at the given index. The index range is from 0...n
      * where 0 is the first item and n is the last item.
      * @param index The index to retrieve.
      */
-    public synchronized WebHistoryItem getItemAtIndex(int index) {
-        throw new MustOverrideException();
-    }
+    public abstract WebHistoryItem getItemAtIndex(int index);
 
     /**
      * Get the total size of the back/forward list.
      * @return The size of the list.
      */
-    public synchronized int getSize() {
-        throw new MustOverrideException();
-    }
+    public abstract int getSize();
 
     /**
      * Clone the entire object to be used in the UI thread by clients of
      * WebView. This creates a copy that should never be modified by any of the
      * webkit package classes.
      */
-    protected synchronized WebBackForwardList clone() {
-        throw new MustOverrideException();
-    }
-
+    protected abstract WebBackForwardList clone();
 }
diff --git a/core/java/android/webkit/WebChromeClient.java b/core/java/android/webkit/WebChromeClient.java
index 46a7fd0..768dc9f 100644
--- a/core/java/android/webkit/WebChromeClient.java
+++ b/core/java/android/webkit/WebChromeClient.java
@@ -16,6 +16,7 @@
 
 package android.webkit;
 
+import android.annotation.SystemApi;
 import android.content.Intent;
 import android.content.pm.ActivityInfo;
 import android.graphics.Bitmap;
@@ -509,6 +510,7 @@
      * @deprecated Use {@link #showFileChooser} instead.
      * @hide This method was not published in any SDK version.
      */
+    @SystemApi
     @Deprecated
     public void openFileChooser(ValueCallback<Uri> uploadFile, String acceptType, String capture) {
         uploadFile.onReceiveValue(null);
diff --git a/core/java/android/webkit/WebHistoryItem.java b/core/java/android/webkit/WebHistoryItem.java
index 9a588e4..569fccd 100644
--- a/core/java/android/webkit/WebHistoryItem.java
+++ b/core/java/android/webkit/WebHistoryItem.java
@@ -16,6 +16,7 @@
 
 package android.webkit;
 
+import android.annotation.SystemApi;
 import android.graphics.Bitmap;
 
 /**
@@ -24,14 +25,7 @@
  * item. Each history item may be updated during the load of a page.
  * @see WebBackForwardList
  */
-public class WebHistoryItem implements Cloneable {
-
-    /**
-     * @hide
-     */
-    public WebHistoryItem() {
-    }
-
+public abstract class WebHistoryItem implements Cloneable {
     /**
      * Return an identifier for this history item. If an item is a copy of
      * another item, the identifiers will be the same even if they are not the
@@ -40,10 +34,9 @@
      * @deprecated This method is now obsolete.
      * @hide Since API level {@link android.os.Build.VERSION_CODES#JELLY_BEAN_MR1}
      */
+    @SystemApi
     @Deprecated
-    public int getId() {
-        throw new MustOverrideException();
-    }
+    public abstract int getId();
 
     /**
      * Return the url of this history item. The url is the base url of this
@@ -53,29 +46,23 @@
      * Note: The VM ensures 32-bit atomic read/write operations so we don't have
      * to synchronize this method.
      */
-    public String getUrl() {
-        throw new MustOverrideException();
-    }
+    public abstract String getUrl();
 
     /**
      * Return the original url of this history item. This was the requested
-     * url, the final url may be different as there might have been 
+     * url, the final url may be different as there might have been
      * redirects while loading the site.
      * @return The original url of this history item.
      */
-    public String getOriginalUrl() {
-        throw new MustOverrideException();
-    }
-    
+    public abstract String getOriginalUrl();
+
     /**
      * Return the document title of this history item.
      * @return The document title of this history item.
      * Note: The VM ensures 32-bit atomic read/write operations so we don't have
      * to synchronize this method.
      */
-    public String getTitle() {
-        throw new MustOverrideException();
-    }
+    public abstract String getTitle();
 
     /**
      * Return the favicon of this history item or null if no favicon was found.
@@ -83,15 +70,10 @@
      * Note: The VM ensures 32-bit atomic read/write operations so we don't have
      * to synchronize this method.
      */
-    public Bitmap getFavicon() {
-        throw new MustOverrideException();
-    }
+    public abstract Bitmap getFavicon();
 
     /**
      * Clone the history item for use by clients of WebView.
      */
-    protected synchronized WebHistoryItem clone() {
-        throw new MustOverrideException();
-    }
-
+    protected abstract WebHistoryItem clone();
 }
diff --git a/core/java/android/webkit/WebIconDatabase.java b/core/java/android/webkit/WebIconDatabase.java
index e574593..08956e0 100644
--- a/core/java/android/webkit/WebIconDatabase.java
+++ b/core/java/android/webkit/WebIconDatabase.java
@@ -16,6 +16,7 @@
 
 package android.webkit;
 
+import android.annotation.SystemApi;
 import android.content.ContentResolver;
 import android.graphics.Bitmap;
 
@@ -32,7 +33,7 @@
  *             up to {@link android.os.Build.VERSION_CODES#JELLY_BEAN_MR2}
  */
 @Deprecated
-public class WebIconDatabase {
+public abstract class WebIconDatabase {
     /**
      * Interface for receiving icons from the database.
      * @deprecated This interface is obsolete.
@@ -52,23 +53,17 @@
      * Open a the icon database and store the icons in the given path.
      * @param path The directory path where the icon database will be stored.
      */
-    public void open(String path) {
-        throw new MustOverrideException();
-    }
+    public abstract void open(String path);
 
     /**
      * Close the shared instance of the icon database.
      */
-    public void close() {
-        throw new MustOverrideException();
-    }
+    public abstract void close();
 
     /**
      * Removes all the icons in the database.
      */
-    public void removeAllIcons() {
-        throw new MustOverrideException();
-    }
+    public abstract void removeAllIcons();
 
     /**
      * Request the Bitmap representing the icon for the given page
@@ -76,32 +71,25 @@
      * @param url The page's url.
      * @param listener An implementation on IconListener to receive the result.
      */
-    public void requestIconForPageUrl(String url, IconListener listener) {
-        throw new MustOverrideException();
-    }
+    public abstract void requestIconForPageUrl(String url, IconListener listener);
 
     /** {@hide}
      */
-    public void bulkRequestIconForPageUrl(ContentResolver cr, String where,
-            IconListener listener) {
-        throw new MustOverrideException();
-    }
+    @SystemApi
+    public abstract void bulkRequestIconForPageUrl(ContentResolver cr, String where,
+            IconListener listener);
 
     /**
      * Retain the icon for the given page url.
      * @param url The page's url.
      */
-    public void retainIconForPageUrl(String url) {
-        throw new MustOverrideException();
-    }
+    public abstract void retainIconForPageUrl(String url);
 
     /**
      * Release the icon for the given page url.
      * @param url The page's url.
      */
-    public void releaseIconForPageUrl(String url) {
-        throw new MustOverrideException();
-    }
+    public abstract void releaseIconForPageUrl(String url);
 
     /**
      * Get the global instance of WebIconDatabase.
@@ -113,9 +101,4 @@
         // XXX: Must be created in the UI thread.
         return WebViewFactory.getProvider().getWebIconDatabase();
     }
-
-    /**
-     * @hide Only for use by WebViewProvider implementations
-     */
-    protected WebIconDatabase() {}
 }
diff --git a/core/java/android/webkit/WebSettings.java b/core/java/android/webkit/WebSettings.java
index 7cf3cb5..1d2c311 100644
--- a/core/java/android/webkit/WebSettings.java
+++ b/core/java/android/webkit/WebSettings.java
@@ -204,25 +204,15 @@
     public static final int MIXED_CONTENT_COMPATIBILITY_MODE = 2;
 
     /**
-     * Hidden constructor to prevent clients from creating a new settings
-     * instance or deriving the class.
-     *
-     * @hide
-     */
-    protected WebSettings() {
-    }
-
-    /**
      * Enables dumping the pages navigation cache to a text file. The default
      * is false.
      *
      * @deprecated This method is now obsolete.
      * @hide Since API level {@link android.os.Build.VERSION_CODES#JELLY_BEAN_MR1}
      */
+    @SystemApi
     @Deprecated
-    public void setNavDump(boolean enabled) {
-        throw new MustOverrideException();
-    }
+    public abstract void setNavDump(boolean enabled);
 
     /**
      * Gets whether dumping the navigation cache is enabled.
@@ -232,10 +222,9 @@
      * @deprecated This method is now obsolete.
      * @hide Since API level {@link android.os.Build.VERSION_CODES#JELLY_BEAN_MR1}
      */
+    @SystemApi
     @Deprecated
-    public boolean getNavDump() {
-        throw new MustOverrideException();
-    }
+    public abstract boolean getNavDump();
 
     /**
      * Sets whether the WebView should support zooming using its on-screen zoom
@@ -246,9 +235,7 @@
      *
      * @param support whether the WebView should support zoom
      */
-    public void setSupportZoom(boolean support) {
-        throw new MustOverrideException();
-    }
+    public abstract void setSupportZoom(boolean support);
 
     /**
      * Gets whether the WebView supports zoom.
@@ -256,9 +243,7 @@
      * @return true if the WebView supports zoom
      * @see #setSupportZoom
      */
-    public boolean supportZoom() {
-        throw new MustOverrideException();
-    }
+    public abstract boolean supportZoom();
 
     /**
      * Sets whether the WebView requires a user gesture to play media.
@@ -266,9 +251,7 @@
      *
      * @param require whether the WebView requires a user gesture to play media
      */
-    public void setMediaPlaybackRequiresUserGesture(boolean require) {
-        throw new MustOverrideException();
-    }
+    public abstract void setMediaPlaybackRequiresUserGesture(boolean require);
 
     /**
      * Gets whether the WebView requires a user gesture to play media.
@@ -276,9 +259,7 @@
      * @return true if the WebView requires a user gesture to play media
      * @see #setMediaPlaybackRequiresUserGesture
      */
-    public boolean getMediaPlaybackRequiresUserGesture() {
-        throw new MustOverrideException();
-    }
+    public abstract boolean getMediaPlaybackRequiresUserGesture();
 
     /**
      * Sets whether the WebView should use its built-in zoom mechanisms. The
@@ -295,9 +276,7 @@
     // This method was intended to select between the built-in zoom mechanisms
     // and the separate zoom controls. The latter were obtained using
     // {@link WebView#getZoomControls}, which is now hidden.
-    public void setBuiltInZoomControls(boolean enabled) {
-        throw new MustOverrideException();
-    }
+    public abstract void setBuiltInZoomControls(boolean enabled);
 
     /**
      * Gets whether the zoom mechanisms built into WebView are being used.
@@ -305,9 +284,7 @@
      * @return true if the zoom mechanisms built into WebView are being used
      * @see #setBuiltInZoomControls
      */
-    public boolean getBuiltInZoomControls() {
-        throw new MustOverrideException();
-    }
+    public abstract boolean getBuiltInZoomControls();
 
     /**
      * Sets whether the WebView should display on-screen zoom controls when
@@ -316,9 +293,7 @@
      *
      * @param enabled whether the WebView should display on-screen zoom controls
      */
-    public void setDisplayZoomControls(boolean enabled) {
-        throw new MustOverrideException();
-    }
+    public abstract void setDisplayZoomControls(boolean enabled);
 
     /**
      * Gets whether the WebView displays on-screen zoom controls when using
@@ -328,9 +303,7 @@
      *         the built-in zoom mechanisms
      * @see #setDisplayZoomControls
      */
-    public boolean getDisplayZoomControls() {
-        throw new MustOverrideException();
-    }
+    public abstract boolean getDisplayZoomControls();
 
     /**
      * Enables or disables file access within WebView. File access is enabled by
@@ -338,36 +311,28 @@
      * Assets and resources are still accessible using file:///android_asset and
      * file:///android_res.
      */
-    public void setAllowFileAccess(boolean allow) {
-        throw new MustOverrideException();
-    }
+    public abstract void setAllowFileAccess(boolean allow);
 
     /**
      * Gets whether this WebView supports file access.
      *
      * @see #setAllowFileAccess
      */
-    public boolean getAllowFileAccess() {
-        throw new MustOverrideException();
-    }
+    public abstract boolean getAllowFileAccess();
 
     /**
      * Enables or disables content URL access within WebView.  Content URL
      * access allows WebView to load content from a content provider installed
      * in the system. The default is enabled.
      */
-    public void setAllowContentAccess(boolean allow) {
-        throw new MustOverrideException();
-    }
+    public abstract void setAllowContentAccess(boolean allow);
 
     /**
      * Gets whether this WebView supports content URL access.
      *
      * @see #setAllowContentAccess
      */
-    public boolean getAllowContentAccess() {
-        throw new MustOverrideException();
-    }
+    public abstract boolean getAllowContentAccess();
 
     /**
      * Sets whether the WebView loads pages in overview mode, that is,
@@ -376,9 +341,7 @@
      * of the WebView control, for example, when {@link #getUseWideViewPort}
      * is enabled. The default is false.
      */
-    public void setLoadWithOverviewMode(boolean overview) {
-        throw new MustOverrideException();
-    }
+    public abstract void setLoadWithOverviewMode(boolean overview);
 
     /**
      * Gets whether this WebView loads pages in overview mode.
@@ -386,9 +349,7 @@
      * @return whether this WebView loads pages in overview mode
      * @see #setLoadWithOverviewMode
      */
-    public boolean getLoadWithOverviewMode() {
-        throw new MustOverrideException();
-    }
+    public abstract boolean getLoadWithOverviewMode();
 
     /**
      * Sets whether the WebView will enable smooth transition while panning or
@@ -400,9 +361,7 @@
      * @deprecated This method is now obsolete, and will become a no-op in future.
      */
     @Deprecated
-    public void setEnableSmoothTransition(boolean enable) {
-        throw new MustOverrideException();
-    }
+    public abstract void setEnableSmoothTransition(boolean enable);
 
     /**
      * Gets whether the WebView enables smooth transition while panning or
@@ -413,9 +372,7 @@
      * @deprecated This method is now obsolete, and will become a no-op in future.
      */
     @Deprecated
-    public boolean enableSmoothTransition() {
-        throw new MustOverrideException();
-    }
+    public abstract  boolean enableSmoothTransition();
 
     /**
      * Sets whether the WebView uses its background for over scroll background.
@@ -425,10 +382,9 @@
      * @deprecated This method is now obsolete.
      * @hide Since API level {@link android.os.Build.VERSION_CODES#JELLY_BEAN_MR1}
      */
+    @SystemApi
     @Deprecated
-    public void setUseWebViewBackgroundForOverscrollBackground(boolean view) {
-        throw new MustOverrideException();
-    }
+    public abstract  void setUseWebViewBackgroundForOverscrollBackground(boolean view);
 
     /**
      * Gets whether this WebView uses WebView's background instead of
@@ -438,17 +394,14 @@
      * @deprecated This method is now obsolete.
      * @hide Since API level {@link android.os.Build.VERSION_CODES#JELLY_BEAN_MR1}
      */
+    @SystemApi
     @Deprecated
-    public boolean getUseWebViewBackgroundForOverscrollBackground() {
-        throw new MustOverrideException();
-    }
+    public abstract  boolean getUseWebViewBackgroundForOverscrollBackground();
 
     /**
      * Sets whether the WebView should save form data. The default is true.
      */
-    public void setSaveFormData(boolean save) {
-        throw new MustOverrideException();
-    }
+    public abstract  void setSaveFormData(boolean save);
 
     /**
      * Gets whether the WebView saves form data.
@@ -456,18 +409,14 @@
      * @return whether the WebView saves form data
      * @see #setSaveFormData
      */
-    public boolean getSaveFormData() {
-        throw new MustOverrideException();
-    }
+    public abstract boolean getSaveFormData();
 
     /**
      * Sets whether the WebView should save passwords. The default is true.
      * @deprecated Saving passwords in WebView will not be supported in future versions.
      */
     @Deprecated
-    public void setSavePassword(boolean save) {
-        throw new MustOverrideException();
-    }
+    public abstract void setSavePassword(boolean save);
 
     /**
      * Gets whether the WebView saves passwords.
@@ -477,18 +426,14 @@
      * @deprecated Saving passwords in WebView will not be supported in future versions.
      */
     @Deprecated
-    public boolean getSavePassword() {
-        throw new MustOverrideException();
-    }
+    public abstract boolean getSavePassword();
 
     /**
      * Sets the text zoom of the page in percent. The default is 100.
      *
      * @param textZoom the text zoom in percent
      */
-    public synchronized void setTextZoom(int textZoom) {
-        throw new MustOverrideException();
-    }
+    public abstract void setTextZoom(int textZoom);
 
     /**
      * Gets the text zoom of the page in percent.
@@ -496,27 +441,23 @@
      * @return the text zoom of the page in percent
      * @see #setTextZoom
      */
-    public synchronized int getTextZoom() {
-        throw new MustOverrideException();
-    }
+    public abstract int getTextZoom();
 
     /**
      * Sets policy for third party cookies.
      * Developers should access this via {@link CookieManager#setShouldAcceptThirdPartyCookies}.
      * @hide Internal API.
      */
-    public void setAcceptThirdPartyCookies(boolean accept) {
-        throw new MustOverrideException();
-    }
+    @SystemApi
+    public abstract void setAcceptThirdPartyCookies(boolean accept);
 
     /**
      * Gets policy for third party cookies.
      * Developers should access this via {@link CookieManager#getShouldAcceptThirdPartyCookies}.
      * @hide Internal API
      */
-    public boolean getAcceptThirdPartyCookies() {
-        throw new MustOverrideException();
-    }
+    @SystemApi
+    public abstract boolean getAcceptThirdPartyCookies();
 
     /**
      * Sets the text size of the page. The default is {@link TextSize#NORMAL}.
@@ -569,9 +510,7 @@
      *             recommended alternatives.
      */
     @Deprecated
-    public void setDefaultZoom(ZoomDensity zoom) {
-        throw new MustOverrideException();
-    }
+    public abstract void setDefaultZoom(ZoomDensity zoom);
 
     /**
      * Gets the default zoom density of the page. This should be called from
@@ -583,9 +522,7 @@
      * @see #setDefaultZoom
      * @deprecated Will only return the default value.
      */
-    public ZoomDensity getDefaultZoom() {
-        throw new MustOverrideException();
-    }
+    public abstract ZoomDensity getDefaultZoom();
 
     /**
      * Enables using light touches to make a selection and activate mouseovers.
@@ -593,9 +530,7 @@
      *             setting is obsolete and has no effect.
      */
     @Deprecated
-    public void setLightTouchEnabled(boolean enabled) {
-        throw new MustOverrideException();
-    }
+    public abstract void setLightTouchEnabled(boolean enabled);
 
     /**
      * Gets whether light touches are enabled.
@@ -603,9 +538,7 @@
      * @deprecated This setting is obsolete.
      */
     @Deprecated
-    public boolean getLightTouchEnabled() {
-        throw new MustOverrideException();
-    }
+    public abstract boolean getLightTouchEnabled();
 
     /**
      * Controlled a rendering optimization that is no longer present. Setting
@@ -615,7 +548,7 @@
      * @hide Since API level {@link android.os.Build.VERSION_CODES#JELLY_BEAN_MR1}
      */
     @Deprecated
-    public synchronized void setUseDoubleTree(boolean use) {
+    public void setUseDoubleTree(boolean use) {
         // Specified to do nothing, so no need for derived classes to override.
     }
 
@@ -627,7 +560,7 @@
      * @hide Since API level {@link android.os.Build.VERSION_CODES#JELLY_BEAN_MR1}
      */
     @Deprecated
-    public synchronized boolean getUseDoubleTree() {
+    public boolean getUseDoubleTree() {
         // Returns false unconditionally, so no need for derived classes to override.
         return false;
     }
@@ -645,10 +578,9 @@
      * @deprecated Please use {@link #setUserAgentString} instead.
      * @hide Since API level {@link android.os.Build.VERSION_CODES#JELLY_BEAN_MR1}
      */
+    @SystemApi
     @Deprecated
-    public synchronized void setUserAgent(int ua) {
-        throw new MustOverrideException();
-    }
+    public abstract void setUserAgent(int ua);
 
     /**
      * Gets the user-agent as an integer code.
@@ -664,10 +596,9 @@
      * @deprecated Please use {@link #getUserAgentString} instead.
      * @hide Since API level {@link android.os.Build.VERSION_CODES#JELLY_BEAN_MR1}
      */
+    @SystemApi
     @Deprecated
-    public synchronized int getUserAgent() {
-        throw new MustOverrideException();
-    }
+    public abstract int getUserAgent();
 
     /**
      * Sets whether the WebView should enable support for the &quot;viewport&quot;
@@ -680,9 +611,7 @@
      *
      * @param use whether to enable support for the viewport meta tag
      */
-    public synchronized void setUseWideViewPort(boolean use) {
-        throw new MustOverrideException();
-    }
+    public abstract void setUseWideViewPort(boolean use);
 
     /**
      * Gets whether the WebView supports the &quot;viewport&quot;
@@ -691,9 +620,7 @@
      * @return true if the WebView supports the viewport meta tag
      * @see #setUseWideViewPort
      */
-    public synchronized boolean getUseWideViewPort() {
-        throw new MustOverrideException();
-    }
+    public abstract boolean getUseWideViewPort();
 
     /**
      * Sets whether the WebView whether supports multiple windows. If set to
@@ -702,9 +629,7 @@
      *
      * @param support whether to suport multiple windows
      */
-    public synchronized void setSupportMultipleWindows(boolean support) {
-        throw new MustOverrideException();
-    }
+    public abstract void setSupportMultipleWindows(boolean support);
 
     /**
      * Gets whether the WebView supports multiple windows.
@@ -712,9 +637,7 @@
      * @return true if the WebView supports multiple windows
      * @see #setSupportMultipleWindows
      */
-    public synchronized boolean supportMultipleWindows() {
-        throw new MustOverrideException();
-    }
+    public abstract boolean supportMultipleWindows();
 
     /**
      * Sets the underlying layout algorithm. This will cause a relayout of the
@@ -722,9 +645,7 @@
      *
      * @param l the layout algorithm to use, as a {@link LayoutAlgorithm} value
      */
-    public synchronized void setLayoutAlgorithm(LayoutAlgorithm l) {
-        throw new MustOverrideException();
-    }
+    public abstract void setLayoutAlgorithm(LayoutAlgorithm l);
 
     /**
      * Gets the current layout algorithm.
@@ -732,18 +653,14 @@
      * @return the layout algorithm in use, as a {@link LayoutAlgorithm} value
      * @see #setLayoutAlgorithm
      */
-    public synchronized LayoutAlgorithm getLayoutAlgorithm() {
-        throw new MustOverrideException();
-    }
+    public abstract LayoutAlgorithm getLayoutAlgorithm();
 
     /**
      * Sets the standard font family name. The default is "sans-serif".
      *
      * @param font a font family name
      */
-    public synchronized void setStandardFontFamily(String font) {
-        throw new MustOverrideException();
-    }
+    public abstract void setStandardFontFamily(String font);
 
     /**
      * Gets the standard font family name.
@@ -751,18 +668,14 @@
      * @return the standard font family name as a string
      * @see #setStandardFontFamily
      */
-    public synchronized String getStandardFontFamily() {
-        throw new MustOverrideException();
-    }
+    public abstract String getStandardFontFamily();
 
     /**
      * Sets the fixed font family name. The default is "monospace".
      *
      * @param font a font family name
      */
-    public synchronized void setFixedFontFamily(String font) {
-        throw new MustOverrideException();
-    }
+    public abstract void setFixedFontFamily(String font);
 
     /**
      * Gets the fixed font family name.
@@ -770,18 +683,14 @@
      * @return the fixed font family name as a string
      * @see #setFixedFontFamily
      */
-    public synchronized String getFixedFontFamily() {
-        throw new MustOverrideException();
-    }
+    public abstract String getFixedFontFamily();
 
     /**
      * Sets the sans-serif font family name. The default is "sans-serif".
      *
      * @param font a font family name
      */
-    public synchronized void setSansSerifFontFamily(String font) {
-        throw new MustOverrideException();
-    }
+    public abstract void setSansSerifFontFamily(String font);
 
     /**
      * Gets the sans-serif font family name.
@@ -789,18 +698,14 @@
      * @return the sans-serif font family name as a string
      * @see #setSansSerifFontFamily
      */
-    public synchronized String getSansSerifFontFamily() {
-        throw new MustOverrideException();
-    }
+    public abstract String getSansSerifFontFamily();
 
     /**
      * Sets the serif font family name. The default is "sans-serif".
      *
      * @param font a font family name
      */
-    public synchronized void setSerifFontFamily(String font) {
-        throw new MustOverrideException();
-    }
+    public abstract void setSerifFontFamily(String font);
 
     /**
      * Gets the serif font family name. The default is "serif".
@@ -808,18 +713,14 @@
      * @return the serif font family name as a string
      * @see #setSerifFontFamily
      */
-    public synchronized String getSerifFontFamily() {
-        throw new MustOverrideException();
-    }
+    public abstract String getSerifFontFamily();
 
     /**
      * Sets the cursive font family name. The default is "cursive".
      *
      * @param font a font family name
      */
-    public synchronized void setCursiveFontFamily(String font) {
-        throw new MustOverrideException();
-    }
+    public abstract void setCursiveFontFamily(String font);
 
     /**
      * Gets the cursive font family name.
@@ -827,18 +728,14 @@
      * @return the cursive font family name as a string
      * @see #setCursiveFontFamily
      */
-    public synchronized String getCursiveFontFamily() {
-        throw new MustOverrideException();
-    }
+    public abstract String getCursiveFontFamily();
 
     /**
      * Sets the fantasy font family name. The default is "fantasy".
      *
      * @param font a font family name
      */
-    public synchronized void setFantasyFontFamily(String font) {
-        throw new MustOverrideException();
-    }
+    public abstract void setFantasyFontFamily(String font);
 
     /**
      * Gets the fantasy font family name.
@@ -846,9 +743,7 @@
      * @return the fantasy font family name as a string
      * @see #setFantasyFontFamily
      */
-    public synchronized String getFantasyFontFamily() {
-        throw new MustOverrideException();
-    }
+    public abstract String getFantasyFontFamily();
 
     /**
      * Sets the minimum font size. The default is 8.
@@ -856,9 +751,7 @@
      * @param size a non-negative integer between 1 and 72. Any number outside
      *             the specified range will be pinned.
      */
-    public synchronized void setMinimumFontSize(int size) {
-        throw new MustOverrideException();
-    }
+    public abstract void setMinimumFontSize(int size);
 
     /**
      * Gets the minimum font size.
@@ -866,9 +759,7 @@
      * @return a non-negative integer between 1 and 72
      * @see #setMinimumFontSize
      */
-    public synchronized int getMinimumFontSize() {
-        throw new MustOverrideException();
-    }
+    public abstract int getMinimumFontSize();
 
     /**
      * Sets the minimum logical font size. The default is 8.
@@ -876,9 +767,7 @@
      * @param size a non-negative integer between 1 and 72. Any number outside
      *             the specified range will be pinned.
      */
-    public synchronized void setMinimumLogicalFontSize(int size) {
-        throw new MustOverrideException();
-    }
+    public abstract void setMinimumLogicalFontSize(int size);
 
     /**
      * Gets the minimum logical font size.
@@ -886,9 +775,7 @@
      * @return a non-negative integer between 1 and 72
      * @see #setMinimumLogicalFontSize
      */
-    public synchronized int getMinimumLogicalFontSize() {
-        throw new MustOverrideException();
-    }
+    public abstract int getMinimumLogicalFontSize();
 
     /**
      * Sets the default font size. The default is 16.
@@ -896,9 +783,7 @@
      * @param size a non-negative integer between 1 and 72. Any number outside
      *             the specified range will be pinned.
      */
-    public synchronized void setDefaultFontSize(int size) {
-        throw new MustOverrideException();
-    }
+    public abstract void setDefaultFontSize(int size);
 
     /**
      * Gets the default font size.
@@ -906,9 +791,7 @@
      * @return a non-negative integer between 1 and 72
      * @see #setDefaultFontSize
      */
-    public synchronized int getDefaultFontSize() {
-        throw new MustOverrideException();
-    }
+    public abstract int getDefaultFontSize();
 
     /**
      * Sets the default fixed font size. The default is 16.
@@ -916,9 +799,7 @@
      * @param size a non-negative integer between 1 and 72. Any number outside
      *             the specified range will be pinned.
      */
-    public synchronized void setDefaultFixedFontSize(int size) {
-        throw new MustOverrideException();
-    }
+    public abstract void setDefaultFixedFontSize(int size);
 
     /**
      * Gets the default fixed font size.
@@ -926,9 +807,7 @@
      * @return a non-negative integer between 1 and 72
      * @see #setDefaultFixedFontSize
      */
-    public synchronized int getDefaultFixedFontSize() {
-        throw new MustOverrideException();
-    }
+    public abstract int getDefaultFixedFontSize();
 
     /**
      * Sets whether the WebView should load image resources. Note that this method
@@ -941,9 +820,7 @@
      *
      * @param flag whether the WebView should load image resources
      */
-    public synchronized void setLoadsImagesAutomatically(boolean flag) {
-        throw new MustOverrideException();
-    }
+    public abstract void setLoadsImagesAutomatically(boolean flag);
 
     /**
      * Gets whether the WebView loads image resources. This includes
@@ -952,9 +829,7 @@
      * @return true if the WebView loads image resources
      * @see #setLoadsImagesAutomatically
      */
-    public synchronized boolean getLoadsImagesAutomatically() {
-        throw new MustOverrideException();
-    }
+    public abstract boolean getLoadsImagesAutomatically();
 
     /**
      * Sets whether the WebView should not load image resources from the
@@ -971,9 +846,7 @@
      *             network
      * @see #setBlockNetworkLoads
      */
-    public synchronized void setBlockNetworkImage(boolean flag) {
-        throw new MustOverrideException();
-    }
+    public abstract void setBlockNetworkImage(boolean flag);
 
     /**
      * Gets whether the WebView does not load image resources from the network.
@@ -981,9 +854,7 @@
      * @return true if the WebView does not load image resources from the network
      * @see #setBlockNetworkImage
      */
-    public synchronized boolean getBlockNetworkImage() {
-        throw new MustOverrideException();
-    }
+    public abstract boolean getBlockNetworkImage();
 
     /**
      * Sets whether the WebView should not load resources from the network.
@@ -1003,9 +874,7 @@
      *             network
      * @see android.webkit.WebView#reload
      */
-    public synchronized void setBlockNetworkLoads(boolean flag) {
-        throw new MustOverrideException();
-    }
+    public abstract void setBlockNetworkLoads(boolean flag);
 
     /**
      * Gets whether the WebView does not load any resources from the network.
@@ -1013,9 +882,7 @@
      * @return true if the WebView does not load any resources from the network
      * @see #setBlockNetworkLoads
      */
-    public synchronized boolean getBlockNetworkLoads() {
-        throw new MustOverrideException();
-    }
+    public abstract boolean getBlockNetworkLoads();
 
     /**
      * Tells the WebView to enable JavaScript execution.
@@ -1023,9 +890,7 @@
      *
      * @param flag true if the WebView should execute JavaScript
      */
-    public synchronized void setJavaScriptEnabled(boolean flag) {
-        throw new MustOverrideException();
-    }
+    public abstract void setJavaScriptEnabled(boolean flag);
 
     /**
      * Sets whether JavaScript running in the context of a file scheme URL
@@ -1076,10 +941,9 @@
      *             {@link #setPluginState}
      * @hide Since API level {@link android.os.Build.VERSION_CODES#JELLY_BEAN_MR2}
      */
+    @SystemApi
     @Deprecated
-    public synchronized void setPluginsEnabled(boolean flag) {
-        throw new MustOverrideException();
-    }
+    public abstract void setPluginsEnabled(boolean flag);
 
     /**
      * Tells the WebView to enable, disable, or have plugins on demand. On
@@ -1092,9 +956,7 @@
      * @deprecated Plugins will not be supported in future, and should not be used.
      */
     @Deprecated
-    public synchronized void setPluginState(PluginState state) {
-        throw new MustOverrideException();
-    }
+    public abstract void setPluginState(PluginState state);
 
     /**
      * Sets a custom path to plugins used by the WebView. This method is
@@ -1106,7 +968,7 @@
      * @hide Since API level {@link android.os.Build.VERSION_CODES#JELLY_BEAN_MR2}
      */
     @Deprecated
-    public synchronized void setPluginsPath(String pluginsPath) {
+    public void setPluginsPath(String pluginsPath) {
         // Specified to do nothing, so no need for derived classes to override.
     }
 
@@ -1125,9 +987,7 @@
     // Note that the WebCore Database Tracker only allows the path to be set
     // once.
     @Deprecated
-    public synchronized void setDatabasePath(String databasePath) {
-        throw new MustOverrideException();
-    }
+    public abstract void setDatabasePath(String databasePath);
 
     /**
      * Sets the path where the Geolocation databases should be saved. In order
@@ -1138,9 +998,7 @@
      *                     saved.
      */
     // This will update WebCore when the Sync runs in the C++ side.
-    public synchronized void setGeolocationDatabasePath(String databasePath) {
-        throw new MustOverrideException();
-    }
+    public abstract void setGeolocationDatabasePath(String databasePath);
 
     /**
      * Sets whether the Application Caches API should be enabled. The default
@@ -1150,9 +1008,7 @@
      *
      * @param flag true if the WebView should enable Application Caches
      */
-    public synchronized void setAppCacheEnabled(boolean flag) {
-        throw new MustOverrideException();
-    }
+    public abstract void setAppCacheEnabled(boolean flag);
 
     /**
      * Sets the path to the Application Caches files. In order for the
@@ -1164,9 +1020,7 @@
      *                     Application Caches files.
      * @see #setAppCacheEnabled
      */
-    public synchronized void setAppCachePath(String appCachePath) {
-        throw new MustOverrideException();
-    }
+    public abstract void setAppCachePath(String appCachePath);
 
     /**
      * Sets the maximum size for the Application Cache content. The passed size
@@ -1180,9 +1034,7 @@
      * @deprecated In future quota will be managed automatically.
      */
     @Deprecated
-    public synchronized void setAppCacheMaxSize(long appCacheMaxSize) {
-        throw new MustOverrideException();
-    }
+    public abstract void setAppCacheMaxSize(long appCacheMaxSize);
 
     /**
      * Sets whether the database storage API is enabled. The default value is
@@ -1196,18 +1048,14 @@
      *
      * @param flag true if the WebView should use the database storage API
      */
-    public synchronized void setDatabaseEnabled(boolean flag) {
-        throw new MustOverrideException();
-    }
+    public abstract void setDatabaseEnabled(boolean flag);
 
     /**
      * Sets whether the DOM storage API is enabled. The default value is false.
      *
      * @param flag true if the WebView should use the DOM storage API
      */
-    public synchronized void setDomStorageEnabled(boolean flag) {
-        throw new MustOverrideException();
-    }
+    public abstract void setDomStorageEnabled(boolean flag);
 
     /**
      * Gets whether the DOM Storage APIs are enabled.
@@ -1215,9 +1063,8 @@
      * @return true if the DOM Storage APIs are enabled
      * @see #setDomStorageEnabled
      */
-    public synchronized boolean getDomStorageEnabled() {
-        throw new MustOverrideException();
-    }
+    public abstract boolean getDomStorageEnabled();
+
     /**
      * Gets the path to where database storage API databases are saved.
      *
@@ -1226,9 +1073,7 @@
      * @deprecated Database paths are managed by the implementation this method is obsolete.
      */
     @Deprecated
-    public synchronized String getDatabasePath() {
-        throw new MustOverrideException();
-    }
+    public abstract String getDatabasePath();
 
     /**
      * Gets whether the database storage API is enabled.
@@ -1236,9 +1081,7 @@
      * @return true if the database storage API is enabled
      * @see #setDatabaseEnabled
      */
-    public synchronized boolean getDatabaseEnabled() {
-        throw new MustOverrideException();
-    }
+    public abstract boolean getDatabaseEnabled();
 
     /**
      * Sets whether Geolocation is enabled. The default is true.
@@ -1260,9 +1103,7 @@
      *
      * @param flag whether Geolocation should be enabled
      */
-    public synchronized void setGeolocationEnabled(boolean flag) {
-        throw new MustOverrideException();
-    }
+    public abstract void setGeolocationEnabled(boolean flag);
 
     /**
      * Gets whether JavaScript is enabled.
@@ -1270,9 +1111,7 @@
      * @return true if JavaScript is enabled
      * @see #setJavaScriptEnabled
      */
-    public synchronized boolean getJavaScriptEnabled() {
-        throw new MustOverrideException();
-    }
+    public abstract boolean getJavaScriptEnabled();
 
     /**
      * Gets whether JavaScript running in the context of a file scheme URL can
@@ -1303,10 +1142,9 @@
      * @deprecated This method has been replaced by {@link #getPluginState}
      * @hide Since API level {@link android.os.Build.VERSION_CODES#JELLY_BEAN_MR2}
      */
+    @SystemApi
     @Deprecated
-    public synchronized boolean getPluginsEnabled() {
-        throw new MustOverrideException();
-    }
+    public abstract boolean getPluginsEnabled();
 
     /**
      * Gets the current state regarding whether plugins are enabled.
@@ -1316,9 +1154,7 @@
      * @deprecated Plugins will not be supported in future, and should not be used.
      */
     @Deprecated
-    public synchronized PluginState getPluginState() {
-        throw new MustOverrideException();
-    }
+    public abstract PluginState getPluginState();
 
     /**
      * Gets the directory that contains the plugin libraries. This method is
@@ -1330,7 +1166,7 @@
      * @hide Since API level {@link android.os.Build.VERSION_CODES#JELLY_BEAN_MR2}
      */
     @Deprecated
-    public synchronized String getPluginsPath() {
+    public String getPluginsPath() {
         // Unconditionally returns empty string, so no need for derived classes to override.
         return "";
     }
@@ -1341,9 +1177,7 @@
      *
      * @param flag true if JavaScript can open windows automatically
      */
-    public synchronized void setJavaScriptCanOpenWindowsAutomatically(boolean flag) {
-        throw new MustOverrideException();
-    }
+    public abstract void setJavaScriptCanOpenWindowsAutomatically(boolean flag);
 
     /**
      * Gets whether JavaScript can open windows automatically.
@@ -1352,9 +1186,7 @@
      *         window.open()
      * @see #setJavaScriptCanOpenWindowsAutomatically
      */
-    public synchronized boolean getJavaScriptCanOpenWindowsAutomatically() {
-        throw new MustOverrideException();
-    }
+    public abstract boolean getJavaScriptCanOpenWindowsAutomatically();
 
     /**
      * Sets the default text encoding name to use when decoding html pages.
@@ -1362,9 +1194,7 @@
      *
      * @param encoding the text encoding name
      */
-    public synchronized void setDefaultTextEncodingName(String encoding) {
-        throw new MustOverrideException();
-    }
+    public abstract void setDefaultTextEncodingName(String encoding);
 
     /**
      * Gets the default text encoding name.
@@ -1372,17 +1202,13 @@
      * @return the default text encoding name as a string
      * @see #setDefaultTextEncodingName
      */
-    public synchronized String getDefaultTextEncodingName() {
-        throw new MustOverrideException();
-    }
+    public abstract String getDefaultTextEncodingName();
 
     /**
      * Sets the WebView's user-agent string. If the string is null or empty,
      * the system default value will be used.
      */
-    public synchronized void setUserAgentString(String ua) {
-        throw new MustOverrideException();
-    }
+    public abstract void setUserAgentString(String ua);
 
     /**
      * Gets the WebView's user-agent string.
@@ -1390,9 +1216,7 @@
      * @return the WebView's user-agent string
      * @see #setUserAgentString
      */
-    public synchronized String getUserAgentString() {
-        throw new MustOverrideException();
-    }
+    public abstract String getUserAgentString();
 
     /**
      * Returns the default User-Agent used by a WebView.
@@ -1412,9 +1236,7 @@
      *
      * @param flag whether the WebView needs to set a node
      */
-    public void setNeedInitialFocus(boolean flag) {
-        throw new MustOverrideException();
-    }
+    public abstract void setNeedInitialFocus(boolean flag);
 
     /**
      * Sets the priority of the Render thread. Unlike the other settings, this
@@ -1426,9 +1248,7 @@
      *             not be supported in future versions.
      */
     @Deprecated
-    public synchronized void setRenderPriority(RenderPriority priority) {
-        throw new MustOverrideException();
-    }
+    public abstract void setRenderPriority(RenderPriority priority);
 
     /**
      * Overrides the way the cache is used. The way the cache is used is based
@@ -1442,9 +1262,7 @@
      *
      * @param mode the mode to use
      */
-    public void setCacheMode(int mode) {
-        throw new MustOverrideException();
-    }
+    public abstract void setCacheMode(int mode);
 
     /**
      * Gets the current setting for overriding the cache mode.
@@ -1452,9 +1270,7 @@
      * @return the current setting for overriding the cache mode
      * @see #setCacheMode
      */
-    public int getCacheMode() {
-        throw new MustOverrideException();
-    }
+    public abstract int getCacheMode();
 
     /**
      * Configures the WebView's behavior when a secure origin attempts to load a resource from an
diff --git a/core/java/android/webkit/WebStorage.java b/core/java/android/webkit/WebStorage.java
index 3bfe9cf..947d0cb 100644
--- a/core/java/android/webkit/WebStorage.java
+++ b/core/java/android/webkit/WebStorage.java
@@ -16,6 +16,8 @@
 
 package android.webkit;
 
+import android.annotation.SystemApi;
+
 import java.util.Map;
 
 /**
@@ -65,23 +67,13 @@
         private long mUsage = 0;
 
         /** @hide */
+        @SystemApi
         protected Origin(String origin, long quota, long usage) {
             mOrigin = origin;
             mQuota = quota;
             mUsage = usage;
         }
 
-        /** @hide */
-        protected Origin(String origin, long quota) {
-            mOrigin = origin;
-            mQuota = quota;
-        }
-
-        /** @hide */
-        protected Origin(String origin) {
-            mOrigin = origin;
-        }
-
         /**
          * Gets the string representation of this origin.
          *
@@ -210,5 +202,6 @@
      * way to call createHandler() and createUIHandler(), so it would not work).
      * @hide
      */
+    @SystemApi
     public WebStorage() {}
 }
diff --git a/core/java/android/webkit/WebView.java b/core/java/android/webkit/WebView.java
index 40aee96..8d2c51f 100644
--- a/core/java/android/webkit/WebView.java
+++ b/core/java/android/webkit/WebView.java
@@ -16,6 +16,7 @@
 
 package android.webkit;
 
+import android.annotation.SystemApi;
 import android.annotation.Widget;
 import android.content.Context;
 import android.content.res.Configuration;
@@ -256,10 +257,12 @@
      * always stay as a hidden API.
      * @hide
      */
+    @SystemApi
     public static final String DATA_REDUCTION_PROXY_SETTING_CHANGED =
             "android.webkit.DATA_REDUCTION_PROXY_SETTING_CHANGED";
 
     private static final String LOGTAG = "WebView";
+    private static final boolean TRACE = false;
 
     // Throwing an exception for incorrect thread usage if the
     // build target is JB MR2 or newer. Defaults to false, and is
@@ -394,6 +397,7 @@
         /**
          * @hide Only for use by WebViewProvider implementations
          */
+        @SystemApi
         public HitTestResult() {
             mType = UNKNOWN_TYPE;
         }
@@ -401,6 +405,7 @@
         /**
          * @hide Only for use by WebViewProvider implementations
          */
+        @SystemApi
         public void setType(int type) {
             mType = type;
         }
@@ -408,6 +413,7 @@
         /**
          * @hide Only for use by WebViewProvider implementations
          */
+        @SystemApi
         public void setExtra(String extra) {
             mExtra = extra;
         }
@@ -542,7 +548,7 @@
         sEnforceThreadChecking = context.getApplicationInfo().targetSdkVersion >=
                 Build.VERSION_CODES.JELLY_BEAN_MR2;
         checkThread();
-        if (DebugFlags.TRACE_API) Log.d(LOGTAG, "WebView<init>");
+        if (TRACE) Log.d(LOGTAG, "WebView<init>");
 
         ensureProviderCreated();
         mProvider.init(javaScriptInterfaces, privateBrowsing);
@@ -557,7 +563,7 @@
      */
     public void setHorizontalScrollbarOverlay(boolean overlay) {
         checkThread();
-        if (DebugFlags.TRACE_API) Log.d(LOGTAG, "setHorizontalScrollbarOverlay=" + overlay);
+        if (TRACE) Log.d(LOGTAG, "setHorizontalScrollbarOverlay=" + overlay);
         mProvider.setHorizontalScrollbarOverlay(overlay);
     }
 
@@ -568,7 +574,7 @@
      */
     public void setVerticalScrollbarOverlay(boolean overlay) {
         checkThread();
-        if (DebugFlags.TRACE_API) Log.d(LOGTAG, "setVerticalScrollbarOverlay=" + overlay);
+        if (TRACE) Log.d(LOGTAG, "setVerticalScrollbarOverlay=" + overlay);
         mProvider.setVerticalScrollbarOverlay(overlay);
     }
 
@@ -623,7 +629,7 @@
     @Deprecated
     public void setCertificate(SslCertificate certificate) {
         checkThread();
-        if (DebugFlags.TRACE_API) Log.d(LOGTAG, "setCertificate=" + certificate);
+        if (TRACE) Log.d(LOGTAG, "setCertificate=" + certificate);
         mProvider.setCertificate(certificate);
     }
 
@@ -647,7 +653,7 @@
     @Deprecated
     public void savePassword(String host, String username, String password) {
         checkThread();
-        if (DebugFlags.TRACE_API) Log.d(LOGTAG, "savePassword=" + host);
+        if (TRACE) Log.d(LOGTAG, "savePassword=" + host);
         mProvider.savePassword(host, username, password);
     }
 
@@ -667,7 +673,7 @@
     public void setHttpAuthUsernamePassword(String host, String realm,
             String username, String password) {
         checkThread();
-        if (DebugFlags.TRACE_API) Log.d(LOGTAG, "setHttpAuthUsernamePassword=" + host);
+        if (TRACE) Log.d(LOGTAG, "setHttpAuthUsernamePassword=" + host);
         mProvider.setHttpAuthUsernamePassword(host, realm, username, password);
     }
 
@@ -697,7 +703,7 @@
      */
     public void destroy() {
         checkThread();
-        if (DebugFlags.TRACE_API) Log.d(LOGTAG, "destroy");
+        if (TRACE) Log.d(LOGTAG, "destroy");
         mProvider.destroy();
     }
 
@@ -743,7 +749,7 @@
      */
     public void setNetworkAvailable(boolean networkUp) {
         checkThread();
-        if (DebugFlags.TRACE_API) Log.d(LOGTAG, "setNetworkAvailable=" + networkUp);
+        if (TRACE) Log.d(LOGTAG, "setNetworkAvailable=" + networkUp);
         mProvider.setNetworkAvailable(networkUp);
     }
 
@@ -760,7 +766,7 @@
      */
     public WebBackForwardList saveState(Bundle outState) {
         checkThread();
-        if (DebugFlags.TRACE_API) Log.d(LOGTAG, "saveState");
+        if (TRACE) Log.d(LOGTAG, "saveState");
         return mProvider.saveState(outState);
     }
 
@@ -777,7 +783,7 @@
     @Deprecated
     public boolean savePicture(Bundle b, final File dest) {
         checkThread();
-        if (DebugFlags.TRACE_API) Log.d(LOGTAG, "savePicture=" + dest.getName());
+        if (TRACE) Log.d(LOGTAG, "savePicture=" + dest.getName());
         return mProvider.savePicture(b, dest);
     }
 
@@ -795,7 +801,7 @@
     @Deprecated
     public boolean restorePicture(Bundle b, File src) {
         checkThread();
-        if (DebugFlags.TRACE_API) Log.d(LOGTAG, "restorePicture=" + src.getName());
+        if (TRACE) Log.d(LOGTAG, "restorePicture=" + src.getName());
         return mProvider.restorePicture(b, src);
     }
 
@@ -813,7 +819,7 @@
      */
     public WebBackForwardList restoreState(Bundle inState) {
         checkThread();
-        if (DebugFlags.TRACE_API) Log.d(LOGTAG, "restoreState");
+        if (TRACE) Log.d(LOGTAG, "restoreState");
         return mProvider.restoreState(inState);
     }
 
@@ -830,7 +836,7 @@
      */
     public void loadUrl(String url, Map<String, String> additionalHttpHeaders) {
         checkThread();
-        if (DebugFlags.TRACE_API) {
+        if (TRACE) {
             StringBuilder headers = new StringBuilder();
             if (additionalHttpHeaders != null) {
                 for (Map.Entry<String, String> entry : additionalHttpHeaders.entrySet()) {
@@ -849,7 +855,7 @@
      */
     public void loadUrl(String url) {
         checkThread();
-        if (DebugFlags.TRACE_API) Log.d(LOGTAG, "loadUrl=" + url);
+        if (TRACE) Log.d(LOGTAG, "loadUrl=" + url);
         mProvider.loadUrl(url);
     }
 
@@ -864,7 +870,7 @@
      */
     public void postUrl(String url, byte[] postData) {
         checkThread();
-        if (DebugFlags.TRACE_API) Log.d(LOGTAG, "postUrl=" + url);
+        if (TRACE) Log.d(LOGTAG, "postUrl=" + url);
         if (URLUtil.isNetworkUrl(url)) {
             mProvider.postUrl(url, postData);
         } else {
@@ -903,7 +909,7 @@
      */
     public void loadData(String data, String mimeType, String encoding) {
         checkThread();
-        if (DebugFlags.TRACE_API) Log.d(LOGTAG, "loadData");
+        if (TRACE) Log.d(LOGTAG, "loadData");
         mProvider.loadData(data, mimeType, encoding);
     }
 
@@ -936,7 +942,7 @@
     public void loadDataWithBaseURL(String baseUrl, String data,
             String mimeType, String encoding, String historyUrl) {
         checkThread();
-        if (DebugFlags.TRACE_API) Log.d(LOGTAG, "loadDataWithBaseURL=" + baseUrl);
+        if (TRACE) Log.d(LOGTAG, "loadDataWithBaseURL=" + baseUrl);
         mProvider.loadDataWithBaseURL(baseUrl, data, mimeType, encoding, historyUrl);
     }
 
@@ -953,7 +959,7 @@
      */
     public void evaluateJavascript(String script, ValueCallback<String> resultCallback) {
         checkThread();
-        if (DebugFlags.TRACE_API) Log.d(LOGTAG, "evaluateJavascript=" + script);
+        if (TRACE) Log.d(LOGTAG, "evaluateJavascript=" + script);
         mProvider.evaluateJavaScript(script, resultCallback);
     }
 
@@ -964,7 +970,7 @@
      */
     public void saveWebArchive(String filename) {
         checkThread();
-        if (DebugFlags.TRACE_API) Log.d(LOGTAG, "saveWebArchive=" + filename);
+        if (TRACE) Log.d(LOGTAG, "saveWebArchive=" + filename);
         mProvider.saveWebArchive(filename);
     }
 
@@ -982,7 +988,7 @@
      */
     public void saveWebArchive(String basename, boolean autoname, ValueCallback<String> callback) {
         checkThread();
-        if (DebugFlags.TRACE_API) Log.d(LOGTAG, "saveWebArchive(auto)=" + basename);
+        if (TRACE) Log.d(LOGTAG, "saveWebArchive(auto)=" + basename);
         mProvider.saveWebArchive(basename, autoname, callback);
     }
 
@@ -991,7 +997,7 @@
      */
     public void stopLoading() {
         checkThread();
-        if (DebugFlags.TRACE_API) Log.d(LOGTAG, "stopLoading");
+        if (TRACE) Log.d(LOGTAG, "stopLoading");
         mProvider.stopLoading();
     }
 
@@ -1000,7 +1006,7 @@
      */
     public void reload() {
         checkThread();
-        if (DebugFlags.TRACE_API) Log.d(LOGTAG, "reload");
+        if (TRACE) Log.d(LOGTAG, "reload");
         mProvider.reload();
     }
 
@@ -1019,7 +1025,7 @@
      */
     public void goBack() {
         checkThread();
-        if (DebugFlags.TRACE_API) Log.d(LOGTAG, "goBack");
+        if (TRACE) Log.d(LOGTAG, "goBack");
         mProvider.goBack();
     }
 
@@ -1038,7 +1044,7 @@
      */
     public void goForward() {
         checkThread();
-        if (DebugFlags.TRACE_API) Log.d(LOGTAG, "goForward");
+        if (TRACE) Log.d(LOGTAG, "goForward");
         mProvider.goForward();
     }
 
@@ -1064,7 +1070,7 @@
      */
     public void goBackOrForward(int steps) {
         checkThread();
-        if (DebugFlags.TRACE_API) Log.d(LOGTAG, "goBackOrForwad=" + steps);
+        if (TRACE) Log.d(LOGTAG, "goBackOrForwad=" + steps);
         mProvider.goBackOrForward(steps);
     }
 
@@ -1084,7 +1090,7 @@
      */
     public boolean pageUp(boolean top) {
         checkThread();
-        if (DebugFlags.TRACE_API) Log.d(LOGTAG, "pageUp");
+        if (TRACE) Log.d(LOGTAG, "pageUp");
         return mProvider.pageUp(top);
     }
 
@@ -1096,7 +1102,7 @@
      */
     public boolean pageDown(boolean bottom) {
         checkThread();
-        if (DebugFlags.TRACE_API) Log.d(LOGTAG, "pageDown");
+        if (TRACE) Log.d(LOGTAG, "pageDown");
         return mProvider.pageDown(bottom);
     }
 
@@ -1109,7 +1115,7 @@
     @Deprecated
     public void clearView() {
         checkThread();
-        if (DebugFlags.TRACE_API) Log.d(LOGTAG, "clearView");
+        if (TRACE) Log.d(LOGTAG, "clearView");
         mProvider.clearView();
     }
 
@@ -1140,7 +1146,7 @@
     @Deprecated
     public Picture capturePicture() {
         checkThread();
-        if (DebugFlags.TRACE_API) Log.d(LOGTAG, "capturePicture");
+        if (TRACE) Log.d(LOGTAG, "capturePicture");
         return mProvider.capturePicture();
     }
 
@@ -1151,7 +1157,7 @@
     @Deprecated
     public PrintDocumentAdapter createPrintDocumentAdapter() {
         checkThread();
-        if (DebugFlags.TRACE_API) Log.d(LOGTAG, "createPrintDocumentAdapter");
+        if (TRACE) Log.d(LOGTAG, "createPrintDocumentAdapter");
         return mProvider.createPrintDocumentAdapter("default");
     }
 
@@ -1170,7 +1176,7 @@
      */
     public PrintDocumentAdapter createPrintDocumentAdapter(String documentName) {
         checkThread();
-        if (DebugFlags.TRACE_API) Log.d(LOGTAG, "createPrintDocumentAdapter");
+        if (TRACE) Log.d(LOGTAG, "createPrintDocumentAdapter");
         return mProvider.createPrintDocumentAdapter(documentName);
     }
 
@@ -1210,7 +1216,7 @@
      */
     public void setInitialScale(int scaleInPercent) {
         checkThread();
-        if (DebugFlags.TRACE_API) Log.d(LOGTAG, "setInitialScale=" + scaleInPercent);
+        if (TRACE) Log.d(LOGTAG, "setInitialScale=" + scaleInPercent);
         mProvider.setInitialScale(scaleInPercent);
     }
 
@@ -1221,7 +1227,7 @@
      */
     public void invokeZoomPicker() {
         checkThread();
-        if (DebugFlags.TRACE_API) Log.d(LOGTAG, "invokeZoomPicker");
+        if (TRACE) Log.d(LOGTAG, "invokeZoomPicker");
         mProvider.invokeZoomPicker();
     }
 
@@ -1245,7 +1251,7 @@
      */
     public HitTestResult getHitTestResult() {
         checkThread();
-        if (DebugFlags.TRACE_API) Log.d(LOGTAG, "getHitTestResult");
+        if (TRACE) Log.d(LOGTAG, "getHitTestResult");
         return mProvider.getHitTestResult();
     }
 
@@ -1264,7 +1270,7 @@
      */
     public void requestFocusNodeHref(Message hrefMsg) {
         checkThread();
-        if (DebugFlags.TRACE_API) Log.d(LOGTAG, "requestFocusNodeHref");
+        if (TRACE) Log.d(LOGTAG, "requestFocusNodeHref");
         mProvider.requestFocusNodeHref(hrefMsg);
     }
 
@@ -1277,7 +1283,7 @@
      */
     public void requestImageRef(Message msg) {
         checkThread();
-        if (DebugFlags.TRACE_API) Log.d(LOGTAG, "requestImageRef");
+        if (TRACE) Log.d(LOGTAG, "requestImageRef");
         mProvider.requestImageRef(msg);
     }
 
@@ -1382,7 +1388,7 @@
      */
     public void pauseTimers() {
         checkThread();
-        if (DebugFlags.TRACE_API) Log.d(LOGTAG, "pauseTimers");
+        if (TRACE) Log.d(LOGTAG, "pauseTimers");
         mProvider.pauseTimers();
     }
 
@@ -1392,7 +1398,7 @@
      */
     public void resumeTimers() {
         checkThread();
-        if (DebugFlags.TRACE_API) Log.d(LOGTAG, "resumeTimers");
+        if (TRACE) Log.d(LOGTAG, "resumeTimers");
         mProvider.resumeTimers();
     }
 
@@ -1405,7 +1411,7 @@
      */
     public void onPause() {
         checkThread();
-        if (DebugFlags.TRACE_API) Log.d(LOGTAG, "onPause");
+        if (TRACE) Log.d(LOGTAG, "onPause");
         mProvider.onPause();
     }
 
@@ -1414,7 +1420,7 @@
      */
     public void onResume() {
         checkThread();
-        if (DebugFlags.TRACE_API) Log.d(LOGTAG, "onResume");
+        if (TRACE) Log.d(LOGTAG, "onResume");
         mProvider.onResume();
     }
 
@@ -1437,7 +1443,7 @@
     @Deprecated
     public void freeMemory() {
         checkThread();
-        if (DebugFlags.TRACE_API) Log.d(LOGTAG, "freeMemory");
+        if (TRACE) Log.d(LOGTAG, "freeMemory");
         mProvider.freeMemory();
     }
 
@@ -1449,7 +1455,7 @@
      */
     public void clearCache(boolean includeDiskFiles) {
         checkThread();
-        if (DebugFlags.TRACE_API) Log.d(LOGTAG, "clearCache");
+        if (TRACE) Log.d(LOGTAG, "clearCache");
         mProvider.clearCache(includeDiskFiles);
     }
 
@@ -1461,7 +1467,7 @@
      */
     public void clearFormData() {
         checkThread();
-        if (DebugFlags.TRACE_API) Log.d(LOGTAG, "clearFormData");
+        if (TRACE) Log.d(LOGTAG, "clearFormData");
         mProvider.clearFormData();
     }
 
@@ -1470,7 +1476,7 @@
      */
     public void clearHistory() {
         checkThread();
-        if (DebugFlags.TRACE_API) Log.d(LOGTAG, "clearHistory");
+        if (TRACE) Log.d(LOGTAG, "clearHistory");
         mProvider.clearHistory();
     }
 
@@ -1480,7 +1486,7 @@
      */
     public void clearSslPreferences() {
         checkThread();
-        if (DebugFlags.TRACE_API) Log.d(LOGTAG, "clearSslPreferences");
+        if (TRACE) Log.d(LOGTAG, "clearSslPreferences");
         mProvider.clearSslPreferences();
     }
 
@@ -1496,7 +1502,7 @@
      *                   callback. The runnable will be called in UI thread.
      */
     public static void clearClientCertPreferences(Runnable onCleared) {
-        if (DebugFlags.TRACE_API) Log.d(LOGTAG, "clearClientCertPreferences");
+        if (TRACE) Log.d(LOGTAG, "clearClientCertPreferences");
         getFactory().getStatics().clearClientCertPreferences(onCleared);
     }
 
@@ -1538,7 +1544,7 @@
      */
     public void findNext(boolean forward) {
         checkThread();
-        if (DebugFlags.TRACE_API) Log.d(LOGTAG, "findNext");
+        if (TRACE) Log.d(LOGTAG, "findNext");
         mProvider.findNext(forward);
     }
 
@@ -1554,7 +1560,7 @@
     @Deprecated
     public int findAll(String find) {
         checkThread();
-        if (DebugFlags.TRACE_API) Log.d(LOGTAG, "findAll");
+        if (TRACE) Log.d(LOGTAG, "findAll");
         StrictMode.noteSlowCall("findAll blocks UI: prefer findAllAsync");
         return mProvider.findAll(find);
     }
@@ -1569,7 +1575,7 @@
      */
     public void findAllAsync(String find) {
         checkThread();
-        if (DebugFlags.TRACE_API) Log.d(LOGTAG, "findAllAsync");
+        if (TRACE) Log.d(LOGTAG, "findAllAsync");
         mProvider.findAllAsync(find);
     }
 
@@ -1590,7 +1596,7 @@
     @Deprecated
     public boolean showFindDialog(String text, boolean showIme) {
         checkThread();
-        if (DebugFlags.TRACE_API) Log.d(LOGTAG, "showFindDialog");
+        if (TRACE) Log.d(LOGTAG, "showFindDialog");
         return mProvider.showFindDialog(text, showIme);
     }
 
@@ -1646,7 +1652,7 @@
      */
     public void clearMatches() {
         checkThread();
-        if (DebugFlags.TRACE_API) Log.d(LOGTAG, "clearMatches");
+        if (TRACE) Log.d(LOGTAG, "clearMatches");
         mProvider.clearMatches();
     }
 
@@ -1707,7 +1713,7 @@
     @Deprecated
     public void setPictureListener(PictureListener listener) {
         checkThread();
-        if (DebugFlags.TRACE_API) Log.d(LOGTAG, "setPictureListener=" + listener);
+        if (TRACE) Log.d(LOGTAG, "setPictureListener=" + listener);
         mProvider.setPictureListener(listener);
     }
 
@@ -1764,7 +1770,7 @@
      */
     public void addJavascriptInterface(Object object, String name) {
         checkThread();
-        if (DebugFlags.TRACE_API) Log.d(LOGTAG, "addJavascriptInterface=" + name);
+        if (TRACE) Log.d(LOGTAG, "addJavascriptInterface=" + name);
         mProvider.addJavascriptInterface(object, name);
     }
 
@@ -1777,7 +1783,7 @@
      */
     public void removeJavascriptInterface(String name) {
         checkThread();
-        if (DebugFlags.TRACE_API) Log.d(LOGTAG, "removeJavascriptInterface=" + name);
+        if (TRACE) Log.d(LOGTAG, "removeJavascriptInterface=" + name);
         mProvider.removeJavascriptInterface(name);
     }
 
@@ -1881,7 +1887,7 @@
 
     public void flingScroll(int vx, int vy) {
         checkThread();
-        if (DebugFlags.TRACE_API) Log.d(LOGTAG, "flingScroll");
+        if (TRACE) Log.d(LOGTAG, "flingScroll");
         mProvider.flingScroll(vx, vy);
     }
 
@@ -2006,6 +2012,7 @@
      *
      * @hide WebViewProvider is not public API.
      */
+    @SystemApi
     public WebViewProvider getWebViewProvider() {
         return mProvider;
     }
@@ -2015,6 +2022,7 @@
      * and fields, and make super-class calls in this WebView instance.
      * @hide Only for use by WebViewProvider implementations
      */
+    @SystemApi
     public class PrivateAccess {
         // ---- Access to super-class methods ----
         public int super_getScrollBarStyle() {
diff --git a/core/java/android/webkit/WebViewDatabase.java b/core/java/android/webkit/WebViewDatabase.java
index 99e0ffb..bfea481 100644
--- a/core/java/android/webkit/WebViewDatabase.java
+++ b/core/java/android/webkit/WebViewDatabase.java
@@ -16,6 +16,7 @@
 
 package android.webkit;
 
+import android.annotation.SystemApi;
 import android.content.Context;
 
 /**
@@ -28,18 +29,12 @@
  *  <li>Data entered into text fields (e.g. for autocomplete suggestions)</li>
  * </ul>
  */
-public class WebViewDatabase {
+public abstract class WebViewDatabase {
     /**
      * @hide Since API level {@link android.os.Build.VERSION_CODES#JELLY_BEAN_MR1}
      */
     protected static final String LOGTAG = "webviewdatabase";
 
-    /**
-     * @hide Only for use by WebViewProvider implementations.
-     */
-    protected WebViewDatabase() {
-    }
-
     public static WebViewDatabase getInstance(Context context) {
         return WebViewFactory.getProvider().getWebViewDatabase(context);
     }
@@ -54,9 +49,7 @@
      * @deprecated Saving passwords in WebView will not be supported in future versions.
      */
     @Deprecated
-    public boolean hasUsernamePassword() {
-        throw new MustOverrideException();
-    }
+    public abstract boolean hasUsernamePassword();
 
     /**
      * Clears any saved username/password pairs for web forms.
@@ -67,9 +60,7 @@
      * @deprecated Saving passwords in WebView will not be supported in future versions.
      */
     @Deprecated
-    public void clearUsernamePassword() {
-        throw new MustOverrideException();
-    }
+    public abstract void clearUsernamePassword();
 
     /**
      * Gets whether there are any saved credentials for HTTP authentication.
@@ -79,9 +70,7 @@
      * @see WebView#setHttpAuthUsernamePassword
      * @see #clearHttpAuthUsernamePassword
      */
-    public boolean hasHttpAuthUsernamePassword() {
-        throw new MustOverrideException();
-    }
+    public abstract boolean hasHttpAuthUsernamePassword();
 
     /**
      * Clears any saved credentials for HTTP authentication.
@@ -90,9 +79,7 @@
      * @see WebView#setHttpAuthUsernamePassword
      * @see #hasHttpAuthUsernamePassword
      */
-    public void clearHttpAuthUsernamePassword() {
-        throw new MustOverrideException();
-    }
+    public abstract void clearHttpAuthUsernamePassword();
 
     /**
      * Gets whether there is any saved data for web forms.
@@ -100,16 +87,12 @@
      * @return whether there is any saved data for web forms
      * @see #clearFormData
      */
-    public boolean hasFormData() {
-        throw new MustOverrideException();
-    }
+    public abstract boolean hasFormData();
 
     /**
      * Clears any saved data for web forms.
      *
      * @see #hasFormData
      */
-    public void clearFormData() {
-        throw new MustOverrideException();
-    }
+    public abstract void clearFormData();
 }
diff --git a/core/java/android/webkit/WebViewDelegate.java b/core/java/android/webkit/WebViewDelegate.java
index c878b3d..3dcfda3 100644
--- a/core/java/android/webkit/WebViewDelegate.java
+++ b/core/java/android/webkit/WebViewDelegate.java
@@ -16,6 +16,7 @@
 
 package android.webkit;
 
+import android.annotation.SystemApi;
 import android.app.ActivityThread;
 import android.app.Application;
 import android.content.Context;
@@ -35,6 +36,7 @@
  *
  * @hide
  */
+@SystemApi
 public final class WebViewDelegate {
 
     /* package */ WebViewDelegate() { }
diff --git a/core/java/android/webkit/WebViewFactory.java b/core/java/android/webkit/WebViewFactory.java
index ca9f378..7b23d8f 100644
--- a/core/java/android/webkit/WebViewFactory.java
+++ b/core/java/android/webkit/WebViewFactory.java
@@ -16,6 +16,7 @@
 
 package android.webkit;
 
+import android.annotation.SystemApi;
 import android.app.ActivityManagerInternal;
 import android.app.Application;
 import android.app.AppGlobals;
@@ -46,6 +47,7 @@
  *
  * @hide
  */
+@SystemApi
 public final class WebViewFactory {
 
     private static final String CHROMIUM_WEBVIEW_FACTORY =
diff --git a/core/java/android/webkit/WebViewFactoryProvider.java b/core/java/android/webkit/WebViewFactoryProvider.java
index d37d217..9105394 100644
--- a/core/java/android/webkit/WebViewFactoryProvider.java
+++ b/core/java/android/webkit/WebViewFactoryProvider.java
@@ -16,6 +16,7 @@
 
 package android.webkit;
 
+import android.annotation.SystemApi;
 import android.content.Context;
 import android.content.Intent;
 import android.net.Uri;
@@ -26,6 +27,7 @@
  * implementation of this interface, and make it available to the WebView via mechanism TBD.
  * @hide
  */
+@SystemApi
 public interface WebViewFactoryProvider {
     /**
      * This Interface provides glue for implementing the backend of WebView static methods which
diff --git a/core/java/android/webkit/WebViewProvider.java b/core/java/android/webkit/WebViewProvider.java
index fe18138..2aee57b 100644
--- a/core/java/android/webkit/WebViewProvider.java
+++ b/core/java/android/webkit/WebViewProvider.java
@@ -16,6 +16,7 @@
 
 package android.webkit;
 
+import android.annotation.SystemApi;
 import android.content.res.Configuration;
 import android.graphics.Bitmap;
 import android.graphics.Canvas;
@@ -53,6 +54,7 @@
  *
  * @hide Not part of the public API; only required by system implementors.
  */
+@SystemApi
 public interface WebViewProvider {
     //-------------------------------------------------------------------------
     // Main interface for backend provider of the WebView class.
diff --git a/media/java/android/media/AudioManager.java b/media/java/android/media/AudioManager.java
index 8fc0b8e..645681a 100644
--- a/media/java/android/media/AudioManager.java
+++ b/media/java/android/media/AudioManager.java
@@ -2201,6 +2201,8 @@
                             listener = findFocusListener((String)msg.obj);
                         }
                         if (listener != null) {
+                            Log.d(TAG, "AudioManager dispatching onAudioFocusChange("
+                                    + msg.what + ") for " + msg.obj);
                             listener.onAudioFocusChange(msg.what);
                         }
                     }
@@ -2270,6 +2272,14 @@
      * A successful focus change request.
      */
     public static final int AUDIOFOCUS_REQUEST_GRANTED = 1;
+     /**
+      * @hide
+      * A focus change request whose granting is delayed: the request was successful, but the
+      * requester will only be granted audio focus once the condition that prevented immediate
+      * granting has ended.
+      * See {@link #requestAudioFocus(OnAudioFocusChangeListener, AudioAttributes, int, int)}
+      */
+    public static final int AUDIOFOCUS_REQUEST_DELAYED = 2;
 
 
     /**
@@ -2291,18 +2301,87 @@
      */
     public int requestAudioFocus(OnAudioFocusChangeListener l, int streamType, int durationHint) {
         int status = AUDIOFOCUS_REQUEST_FAILED;
+
+        try {
+            // status is guaranteed to be either AUDIOFOCUS_REQUEST_FAILED or
+            // AUDIOFOCUS_REQUEST_GRANTED as focus is requested without the
+            // AUDIOFOCUS_FLAG_DELAY_OK flag
+            status = requestAudioFocus(l,
+                    new AudioAttributes.Builder()
+                            .setInternalLegacyStreamType(streamType).build(),
+                    durationHint,
+                    0 /* flags, legacy behavior */);
+        } catch (IllegalArgumentException e) {
+            Log.e(TAG, "Audio focus request denied due to ", e);
+        }
+
+        return status;
+    }
+
+    // when adding new flags, add them to AUDIOFOCUS_FLAGS_ALL
+    /** @hide */
+    public static final int AUDIOFOCUS_FLAG_DELAY_OK = 0x1 << 0;
+    /** @hide */
+    public static final int AUDIOFOCUS_FLAGS_ALL = AUDIOFOCUS_FLAG_DELAY_OK;
+
+    /**
+     * @hide
+     * @param l the listener to be notified of audio focus changes. It is not allowed to be null
+     *     when the request is flagged with {@link #AUDIOFOCUS_FLAG_DELAY_OK}.
+     * @param requestAttributes non null {@link AudioAttributes} describing the main reason for
+     *     requesting audio focus.
+     * @param durationHint use {@link #AUDIOFOCUS_GAIN_TRANSIENT} to indicate this focus request
+     *      is temporary, and focus will be abandonned shortly. Examples of transient requests are
+     *      for the playback of driving directions, or notifications sounds.
+     *      Use {@link #AUDIOFOCUS_GAIN_TRANSIENT_MAY_DUCK} to indicate also that it's ok for
+     *      the previous focus owner to keep playing if it ducks its audio output.
+     *      Alternatively use {@link #AUDIOFOCUS_GAIN_TRANSIENT_EXCLUSIVE} for a temporary request
+     *      that benefits from the system not playing disruptive sounds like notifications, for
+     *      usecases such as voice memo recording, or speech recognition.
+     *      Use {@link #AUDIOFOCUS_GAIN} for a focus request of unknown duration such
+     *      as the playback of a song or a video.
+     * @param flags use 0 when not using any flags for the request, which behaves like
+     *      {@link #requestAudioFocus(OnAudioFocusChangeListener, int, int)}, where either audio
+     *      focus is granted immediately, or the grant request fails because the system is in a
+     *      state where focus cannot change (e.g. a phone call).
+     *      Use {link #AUDIOFOCUS_FLAG_DELAY_OK} if it is ok for the requester to not be granted
+     *      audio focus immediately (as indicated by {@link #AUDIOFOCUS_REQUEST_DELAYED}) when
+     *      the system is in a state where focus cannot change, but be granted focus later when
+     *      this condition ends.
+     * @return {@link #AUDIOFOCUS_REQUEST_FAILED}, {@link #AUDIOFOCUS_REQUEST_GRANTED}
+     *     or {@link #AUDIOFOCUS_REQUEST_DELAYED}.
+     *     The return value is never {@link #AUDIOFOCUS_REQUEST_DELAYED} when focus is requested
+     *     without the {@link #AUDIOFOCUS_FLAG_DELAY_OK} flag.
+     * @throws IllegalArgumentException
+     */
+    public int requestAudioFocus(OnAudioFocusChangeListener l,
+            AudioAttributes requestAttributes,
+            int durationHint,
+            int flags) throws IllegalArgumentException {
+        // parameter checking
+        if (requestAttributes == null) {
+            throw new IllegalArgumentException("Illegal null AudioAttributes argument");
+        }
         if ((durationHint < AUDIOFOCUS_GAIN) ||
                 (durationHint > AUDIOFOCUS_GAIN_TRANSIENT_EXCLUSIVE)) {
-            Log.e(TAG, "Invalid duration hint, audio focus request denied");
-            return status;
+            throw new IllegalArgumentException("Invalid duration hint");
         }
+        if (flags != (flags & AUDIOFOCUS_FLAGS_ALL)) {
+            throw new IllegalArgumentException("Illegal flags 0x"
+                + Integer.toHexString(flags).toUpperCase());
+        }
+        if (((flags & AUDIOFOCUS_FLAG_DELAY_OK) == AUDIOFOCUS_FLAG_DELAY_OK) && (l == null)) {
+            throw new IllegalArgumentException(
+                    "Illegal null focus listener when flagged as accepting delayed focus grant");
+        }
+
+        int status = AUDIOFOCUS_REQUEST_FAILED;
         registerAudioFocusListener(l);
-        //TODO protect request by permission check?
         IAudioService service = getService();
         try {
-            status = service.requestAudioFocus(streamType, durationHint, mICallBack,
+            status = service.requestAudioFocus(requestAttributes, durationHint, mICallBack,
                     mAudioFocusDispatcher, getIdForAudioFocusListener(l),
-                    mContext.getOpPackageName() /* package name */);
+                    mContext.getOpPackageName() /* package name */, flags);
         } catch (RemoteException e) {
             Log.e(TAG, "Can't call requestAudioFocus() on AudioService due to "+e);
         }
@@ -2322,9 +2401,11 @@
     public void requestAudioFocusForCall(int streamType, int durationHint) {
         IAudioService service = getService();
         try {
-            service.requestAudioFocus(streamType, durationHint, mICallBack, null,
+            service.requestAudioFocus(new AudioAttributes.Builder()
+                        .setInternalLegacyStreamType(streamType).build(),
+                    durationHint, mICallBack, null,
                     MediaFocusControl.IN_VOICE_COMM_FOCUS_ID,
-                    mContext.getOpPackageName());
+                    mContext.getOpPackageName(), 0 /* flags, legacy behavior*/ );
         } catch (RemoteException e) {
             Log.e(TAG, "Can't call requestAudioFocusForCall() on AudioService due to "+e);
         }
diff --git a/media/java/android/media/AudioService.java b/media/java/android/media/AudioService.java
index 29d4930..a80b356 100644
--- a/media/java/android/media/AudioService.java
+++ b/media/java/android/media/AudioService.java
@@ -5011,10 +5011,10 @@
     //==========================================================================================
     // Audio Focus
     //==========================================================================================
-    public int requestAudioFocus(int mainStreamType, int durationHint, IBinder cb,
-            IAudioFocusDispatcher fd, String clientId, String callingPackageName) {
-        return mMediaFocusControl.requestAudioFocus(mainStreamType, durationHint, cb, fd,
-                clientId, callingPackageName);
+    public int requestAudioFocus(AudioAttributes aa, int durationHint, IBinder cb,
+            IAudioFocusDispatcher fd, String clientId, String callingPackageName, int flags) {
+        return mMediaFocusControl.requestAudioFocus(aa, durationHint, cb, fd,
+                clientId, callingPackageName, flags);
     }
 
     public int abandonAudioFocus(IAudioFocusDispatcher fd, String clientId) {
diff --git a/media/java/android/media/FocusRequester.java b/media/java/android/media/FocusRequester.java
index 9a39994..682d54c 100644
--- a/media/java/android/media/FocusRequester.java
+++ b/media/java/android/media/FocusRequester.java
@@ -45,19 +45,24 @@
      */
     private final int mFocusGainRequest;
     /**
+     * the flags associated with the gain request that qualify the type of grant (e.g. accepting
+     * delay vs grant must be immediate)
+     */
+    private final int mGrantFlags;
+    /**
      * the audio focus loss received my mFocusDispatcher, is AudioManager.AUDIOFOCUS_NONE if
      *  it never lost focus.
      */
     private int mFocusLossReceived;
     /**
-     * the stream type associated with the focus request
+     * the audio attributes associated with the focus request
      */
-    private final int mStreamType;
+    private final AudioAttributes mAttributes;
 
-    FocusRequester(int streamType, int focusRequest,
+    FocusRequester(AudioAttributes aa, int focusRequest, int grantFlags,
             IAudioFocusDispatcher afl, IBinder source, String id, AudioFocusDeathHandler hdlr,
             String pn, int uid) {
-        mStreamType = streamType;
+        mAttributes = aa;
         mFocusDispatcher = afl;
         mSourceRef = source;
         mClientId = id;
@@ -65,6 +70,7 @@
         mPackageName = pn;
         mCallingUid = uid;
         mFocusGainRequest = focusRequest;
+        mGrantFlags = grantFlags;
         mFocusLossReceived = AudioManager.AUDIOFOCUS_NONE;
     }
 
@@ -98,8 +104,12 @@
         return mFocusGainRequest;
     }
 
-    int getStreamType() {
-        return mStreamType;
+    int getGrantFlags() {
+        return mGrantFlags;
+    }
+
+    AudioAttributes getAudioAttributes() {
+        return mAttributes;
     }
 
 
@@ -139,9 +149,10 @@
                 + " -- pack: " + mPackageName
                 + " -- client: " + mClientId
                 + " -- gain: " + focusGainToString()
+                + " -- grant: " + mGrantFlags
                 + " -- loss: " + focusLossToString()
                 + " -- uid: " + mCallingUid
-                + " -- stream: " + mStreamType);
+                + " -- attr: " + mAttributes);
     }
 
 
diff --git a/media/java/android/media/IAudioService.aidl b/media/java/android/media/IAudioService.aidl
index 317cc21..47a5291 100644
--- a/media/java/android/media/IAudioService.aidl
+++ b/media/java/android/media/IAudioService.aidl
@@ -19,6 +19,7 @@
 import android.app.PendingIntent;
 import android.bluetooth.BluetoothDevice;
 import android.content.ComponentName;
+import android.media.AudioAttributes;
 import android.media.AudioRoutesInfo;
 import android.media.IAudioFocusDispatcher;
 import android.media.IAudioRoutesObserver;
@@ -116,8 +117,8 @@
 
     boolean isBluetoothA2dpOn();
 
-    int requestAudioFocus(int mainStreamType, int durationHint, IBinder cb,
-            IAudioFocusDispatcher fd, String clientId, String callingPackageName);
+    int requestAudioFocus(in AudioAttributes aa, int durationHint, IBinder cb,
+            IAudioFocusDispatcher fd, String clientId, String callingPackageName, int flags);
 
     int abandonAudioFocus(IAudioFocusDispatcher fd, String clientId);
 
diff --git a/media/java/android/media/MediaFocusControl.java b/media/java/android/media/MediaFocusControl.java
index c67e397..c495106 100644
--- a/media/java/android/media/MediaFocusControl.java
+++ b/media/java/android/media/MediaFocusControl.java
@@ -538,16 +538,54 @@
     /**
      * Helper function:
      * Returns true if the system is in a state where the focus can be reevaluated, false otherwise.
+     * The implementation guarantees that a state where focus cannot be immediately reassigned
+     * implies that an "exclusive" focus owner is at the top of the focus stack.
+     * Modifications to the implementation that break this assumption will cause focus requests to
+     * misbehave when honoring the AudioManager.AUDIOFOCUS_FLAG_DELAY_OK flag.
      */
     private boolean canReassignAudioFocus() {
         // focus requests are rejected during a phone call or when the phone is ringing
         // this is equivalent to IN_VOICE_COMM_FOCUS_ID having the focus
-        if (!mFocusStack.isEmpty() && mFocusStack.peek().hasSameClient(IN_VOICE_COMM_FOCUS_ID)) {
+        if (!mFocusStack.isEmpty() && isExclusiveFocusOwner(mFocusStack.peek())) {
             return false;
         }
         return true;
     }
 
+    private boolean isExclusiveFocusOwner(FocusRequester fr) {
+        return fr.hasSameClient(IN_VOICE_COMM_FOCUS_ID);
+    }
+
+    /**
+     * Helper function
+     * Pre-conditions: focus stack is not empty, there is one or more exclusive focus owner
+     *                 at the top of the focus stack
+     * Push the focus requester onto the audio focus stack at the first position immediately
+     * following the exclusive focus owners.
+     * @return {@link AudioManager#AUDIOFOCUS_REQUEST_GRANTED} or
+     *     {@link AudioManager#AUDIOFOCUS_REQUEST_DELAYED}
+     */
+    private int pushBelowExclusiveFocusOwners(FocusRequester nfr) {
+        int lastExclusiveFocusOwnerIndex = mFocusStack.size();
+        for (int index = mFocusStack.size()-1; index >= 0; index--) {
+            if (isExclusiveFocusOwner(mFocusStack.elementAt(index))) {
+                lastExclusiveFocusOwnerIndex = index;
+            }
+        }
+        if (lastExclusiveFocusOwnerIndex == mFocusStack.size()) {
+            // this should not happen, but handle it and log an error
+            Log.e(TAG, "No exclusive focus owner found in propagateFocusLossFromGain_syncAf()",
+                    new Exception());
+            // no exclusive owner, push at top of stack, focus is granted, propagate change
+            propagateFocusLossFromGain_syncAf(nfr.getGainRequest());
+            mFocusStack.push(nfr);
+            return AudioManager.AUDIOFOCUS_REQUEST_GRANTED;
+        } else {
+            mFocusStack.insertElementAt(nfr, lastExclusiveFocusOwnerIndex);
+            return AudioManager.AUDIOFOCUS_REQUEST_DELAYED;
+        }
+    }
+
     /**
      * Inner class to monitor audio focus client deaths, and remove them from the audio focus
      * stack if necessary.
@@ -581,10 +619,11 @@
         }
     }
 
-    /** @see AudioManager#requestAudioFocus(AudioManager.OnAudioFocusChangeListener, int, int)  */
-    protected int requestAudioFocus(int mainStreamType, int focusChangeHint, IBinder cb,
-            IAudioFocusDispatcher fd, String clientId, String callingPackageName) {
-        Log.i(TAG, " AudioFocus  requestAudioFocus() from " + clientId);
+    /** @see AudioManager#requestAudioFocus(AudioManager.OnAudioFocusChangeListener, int, int, int) */
+    protected int requestAudioFocus(AudioAttributes aa, int focusChangeHint, IBinder cb,
+            IAudioFocusDispatcher fd, String clientId, String callingPackageName, int flags) {
+        Log.i(TAG, " AudioFocus  requestAudioFocus() from " + clientId + " req=" + focusChangeHint +
+                "flags=0x" + Integer.toHexString(flags));
         // we need a valid binder callback for clients
         if (!cb.pingBinder()) {
             Log.e(TAG, " AudioFocus DOA client for requestAudioFocus(), aborting.");
@@ -597,8 +636,16 @@
         }
 
         synchronized(mAudioFocusLock) {
+            boolean focusGrantDelayed = false;
             if (!canReassignAudioFocus()) {
-                return AudioManager.AUDIOFOCUS_REQUEST_FAILED;
+                if ((flags & AudioManager.AUDIOFOCUS_FLAG_DELAY_OK) == 0) {
+                    return AudioManager.AUDIOFOCUS_REQUEST_FAILED;
+                } else {
+                    // request has AUDIOFOCUS_FLAG_DELAY_OK: focus can't be
+                    // granted right now, so the requester will be inserted in the focus stack
+                    // to receive focus later
+                    focusGrantDelayed = true;
+                }
             }
 
             // handle the potential premature death of the new holder of the focus
@@ -616,7 +663,8 @@
             if (!mFocusStack.empty() && mFocusStack.peek().hasSameClient(clientId)) {
                 // if focus is already owned by this client and the reason for acquiring the focus
                 // hasn't changed, don't do anything
-                if (mFocusStack.peek().getGainRequest() == focusChangeHint) {
+                final FocusRequester fr = mFocusStack.peek();
+                if (fr.getGainRequest() == focusChangeHint && fr.getGrantFlags() == flags) {
                     // unlink death handler so it can be gc'ed.
                     // linkToDeath() creates a JNI global reference preventing collection.
                     cb.unlinkToDeath(afdh, 0);
@@ -624,21 +672,31 @@
                 }
                 // the reason for the audio focus request has changed: remove the current top of
                 // stack and respond as if we had a new focus owner
-                FocusRequester fr = mFocusStack.pop();
-                fr.release();
+                if (!focusGrantDelayed) {
+                    mFocusStack.pop();
+                    // the entry that was "popped" is the same that was "peeked" above
+                    fr.release();
+                }
             }
 
             // focus requester might already be somewhere below in the stack, remove it
             removeFocusStackEntry(clientId, false /* signal */);
 
-            // propagate the focus change through the stack
-            if (!mFocusStack.empty()) {
-                propagateFocusLossFromGain_syncAf(focusChangeHint);
-            }
+            final FocusRequester nfr = new FocusRequester(aa, focusChangeHint, flags, fd, cb,
+                    clientId, afdh, callingPackageName, Binder.getCallingUid());
+            if (focusGrantDelayed) {
+                // focusGrantDelayed being true implies we can't reassign focus right now
+                // which implies the focus stack is not empty.
+                return pushBelowExclusiveFocusOwners(nfr);
+            } else {
+                // propagate the focus change through the stack
+                if (!mFocusStack.empty()) {
+                    propagateFocusLossFromGain_syncAf(focusChangeHint);
+                }
 
-            // push focus requester at the top of the audio focus stack
-            mFocusStack.push(new FocusRequester(mainStreamType, focusChangeHint, fd, cb,
-                    clientId, afdh, callingPackageName, Binder.getCallingUid()));
+                // push focus requester at the top of the audio focus stack
+                mFocusStack.push(nfr);
+            }
 
         }//synchronized(mAudioFocusLock)
 
diff --git a/media/jni/android_mtp_MtpDatabase.cpp b/media/jni/android_mtp_MtpDatabase.cpp
index 62b4a36..b8e850a 100644
--- a/media/jni/android_mtp_MtpDatabase.cpp
+++ b/media/jni/android_mtp_MtpDatabase.cpp
@@ -469,6 +469,63 @@
     return result;
 }
 
+static bool readLongValue(int type, MtpDataPacket& packet, jlong& longValue) {
+    switch (type) {
+        case MTP_TYPE_INT8: {
+            int8_t temp;
+            if (!packet.getInt8(temp)) return false;
+            longValue = temp;
+            break;
+        }
+        case MTP_TYPE_UINT8: {
+            uint8_t temp;
+            if (!packet.getUInt8(temp)) return false;
+            longValue = temp;
+            break;
+        }
+        case MTP_TYPE_INT16: {
+            int16_t temp;
+            if (!packet.getInt16(temp)) return false;
+            longValue = temp;
+            break;
+        }
+        case MTP_TYPE_UINT16: {
+            uint16_t temp;
+            if (!packet.getUInt16(temp)) return false;
+            longValue = temp;
+            break;
+        }
+        case MTP_TYPE_INT32: {
+            int32_t temp;
+            if (!packet.getInt32(temp)) return false;
+            longValue = temp;
+            break;
+        }
+        case MTP_TYPE_UINT32: {
+            uint32_t temp;
+            if (!packet.getUInt32(temp)) return false;
+            longValue = temp;
+            break;
+        }
+        case MTP_TYPE_INT64: {
+            int64_t temp;
+            if (!packet.getInt64(temp)) return false;
+            longValue = temp;
+            break;
+        }
+        case MTP_TYPE_UINT64: {
+            uint64_t temp;
+            if (!packet.getUInt64(temp)) return false;
+            longValue = temp;
+            break;
+        }
+        default:
+            ALOGE("unsupported type in readLongValue");
+            return false;
+    }
+    return true;
+}
+
 MtpResponseCode MyMtpDatabase::setObjectPropertyValue(MtpObjectHandle handle,
                                             MtpObjectProperty property,
                                             MtpDataPacket& packet) {
@@ -480,49 +537,22 @@
     JNIEnv* env = AndroidRuntime::getJNIEnv();
     jlong longValue = 0;
     jstring stringValue = NULL;
+    MtpResponseCode result = MTP_RESPONSE_INVALID_OBJECT_PROP_FORMAT;
 
-    switch (type) {
-        case MTP_TYPE_INT8:
-            longValue = packet.getInt8();
-            break;
-        case MTP_TYPE_UINT8:
-            longValue = packet.getUInt8();
-            break;
-        case MTP_TYPE_INT16:
-            longValue = packet.getInt16();
-            break;
-        case MTP_TYPE_UINT16:
-            longValue = packet.getUInt16();
-            break;
-        case MTP_TYPE_INT32:
-            longValue = packet.getInt32();
-            break;
-        case MTP_TYPE_UINT32:
-            longValue = packet.getUInt32();
-            break;
-        case MTP_TYPE_INT64:
-            longValue = packet.getInt64();
-            break;
-        case MTP_TYPE_UINT64:
-            longValue = packet.getUInt64();
-            break;
-        case MTP_TYPE_STR:
-        {
-            MtpStringBuffer buffer;
-            packet.getString(buffer);
-            stringValue = env->NewStringUTF((const char *)buffer);
-            break;
-         }
-        default:
-            ALOGE("unsupported type in setObjectPropertyValue\n");
-            return MTP_RESPONSE_INVALID_OBJECT_PROP_FORMAT;
+    if (type == MTP_TYPE_STR) {
+        MtpStringBuffer buffer;
+        if (!packet.getString(buffer)) goto fail;
+        stringValue = env->NewStringUTF((const char *)buffer);
+    } else {
+        if (!readLongValue(type, packet, longValue)) goto fail;
     }
 
-    jint result = env->CallIntMethod(mDatabase, method_setObjectProperty,
+    result = env->CallIntMethod(mDatabase, method_setObjectProperty,
                 (jint)handle, (jint)property, longValue, stringValue);
     if (stringValue)
         env->DeleteLocalRef(stringValue);
 
+fail:
     checkAndClearExceptionFromCallback(env, __FUNCTION__);
     return result;
 }
@@ -610,49 +640,22 @@
     JNIEnv* env = AndroidRuntime::getJNIEnv();
     jlong longValue = 0;
     jstring stringValue = NULL;
+    MtpResponseCode result = MTP_RESPONSE_INVALID_DEVICE_PROP_FORMAT;
 
-    switch (type) {
-        case MTP_TYPE_INT8:
-            longValue = packet.getInt8();
-            break;
-        case MTP_TYPE_UINT8:
-            longValue = packet.getUInt8();
-            break;
-        case MTP_TYPE_INT16:
-            longValue = packet.getInt16();
-            break;
-        case MTP_TYPE_UINT16:
-            longValue = packet.getUInt16();
-            break;
-        case MTP_TYPE_INT32:
-            longValue = packet.getInt32();
-            break;
-        case MTP_TYPE_UINT32:
-            longValue = packet.getUInt32();
-            break;
-        case MTP_TYPE_INT64:
-            longValue = packet.getInt64();
-            break;
-        case MTP_TYPE_UINT64:
-            longValue = packet.getUInt64();
-            break;
-        case MTP_TYPE_STR:
-        {
-            MtpStringBuffer buffer;
-            packet.getString(buffer);
-            stringValue = env->NewStringUTF((const char *)buffer);
-            break;
-         }
-        default:
-            ALOGE("unsupported type in setDevicePropertyValue\n");
-            return MTP_RESPONSE_INVALID_OBJECT_PROP_FORMAT;
+    if (type == MTP_TYPE_STR) {
+        MtpStringBuffer buffer;
+        if (!packet.getString(buffer)) goto fail;
+        stringValue = env->NewStringUTF((const char *)buffer);
+    } else {
+        if (!readLongValue(type, packet, longValue)) goto fail;
     }
 
-    jint result = env->CallIntMethod(mDatabase, method_setDeviceProperty,
+    result = env->CallIntMethod(mDatabase, method_setDeviceProperty,
                 (jint)property, longValue, stringValue);
     if (stringValue)
         env->DeleteLocalRef(stringValue);
 
+fail:
     checkAndClearExceptionFromCallback(env, __FUNCTION__);
     return result;
 }
diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/phone/DozeScrimController.java b/packages/SystemUI/src/com/android/systemui/statusbar/phone/DozeScrimController.java
new file mode 100644
index 0000000..c0d7b9b
--- /dev/null
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/phone/DozeScrimController.java
@@ -0,0 +1,260 @@
+/*
+ * Copyright (C) 2014 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License
+ */
+
+package com.android.systemui.statusbar.phone;
+
+import android.animation.Animator;
+import android.animation.AnimatorListenerAdapter;
+import android.animation.ValueAnimator;
+import android.annotation.NonNull;
+import android.content.Context;
+import android.graphics.Color;
+import android.os.Handler;
+import android.util.Log;
+import android.view.animation.Animation;
+import android.view.animation.AnimationUtils;
+import android.view.animation.Interpolator;
+
+import com.android.systemui.doze.DozeHost;
+import com.android.systemui.doze.DozeLog;
+
+/**
+ * Controller which handles all the doze animations of the scrims.
+ */
+public class DozeScrimController {
+    private static final String TAG = "DozeScrimController";
+    private static final boolean DEBUG = Log.isLoggable(TAG, Log.DEBUG);
+
+    private final DozeParameters mDozeParameters;
+    private final Interpolator mPulseInInterpolator = PhoneStatusBar.ALPHA_OUT;
+    private final Interpolator mPulseOutInterpolator = PhoneStatusBar.ALPHA_IN;
+    private final Interpolator mDozeAnimationInterpolator;
+    private final Handler mHandler = new Handler();
+    private final ScrimController mScrimController;
+
+    private boolean mDozing;
+    private DozeHost.PulseCallback mPulseCallback;
+    private Animator mInFrontAnimator;
+    private Animator mBehindAnimator;
+    private float mInFrontTarget;
+    private float mBehindTarget;
+
+    public DozeScrimController(ScrimController scrimController, Context context) {
+        mScrimController = scrimController;
+        mDozeParameters = new DozeParameters(context);
+        mDozeAnimationInterpolator = AnimationUtils.loadInterpolator(context,
+                android.R.interpolator.linear_out_slow_in);
+    }
+
+    public void setDozing(boolean dozing, boolean animate) {
+        if (mDozing == dozing) return;
+        mDozing = dozing;
+        if (mDozing) {
+            abortAnimations();
+            mScrimController.setDozeBehindAlpha(1f);
+            mScrimController.setDozeInFrontAlpha(1f);
+        } else {
+            cancelPulsing();
+            if (animate) {
+                startScrimAnimation(false /* inFront */, 0f /* target */,
+                        NotificationPanelView.DOZE_ANIMATION_DURATION, mDozeAnimationInterpolator);
+                startScrimAnimation(true /* inFront */, 0f /* target */,
+                        NotificationPanelView.DOZE_ANIMATION_DURATION, mDozeAnimationInterpolator);
+            } else {
+                abortAnimations();
+                mScrimController.setDozeBehindAlpha(0f);
+                mScrimController.setDozeInFrontAlpha(0f);
+            }
+        }
+    }
+
+    /** When dozing, fade screen contents in and out using the front scrim. */
+    public void pulse(@NonNull DozeHost.PulseCallback callback) {
+        if (callback == null) {
+            throw new IllegalArgumentException("callback must not be null");
+        }
+
+        if (!mDozing || mPulseCallback != null) {
+            // Pulse suppressed.
+            callback.onPulseFinished();
+            return;
+        }
+
+        // Begin pulse.  Note that it's very important that the pulse finished callback
+        // be invoked when we're done so that the caller can drop the pulse wakelock.
+        mPulseCallback = callback;
+        mHandler.post(mPulseIn);
+    }
+
+    public boolean isPulsing() {
+        return mPulseCallback != null;
+    }
+
+    private void cancelPulsing() {
+        if (DEBUG) Log.d(TAG, "Cancel pulsing");
+
+        if (mPulseCallback != null) {
+            mHandler.removeCallbacks(mPulseIn);
+            mHandler.removeCallbacks(mPulseOut);
+            pulseFinished();
+        }
+    }
+
+    private void pulseStarted() {
+        if (mPulseCallback != null) {
+            mPulseCallback.onPulseStarted();
+        }
+    }
+
+    private void pulseFinished() {
+        if (mPulseCallback != null) {
+            mPulseCallback.onPulseFinished();
+            mPulseCallback = null;
+        }
+    }
+
+    private void abortAnimations() {
+        if (mInFrontAnimator != null) {
+            mInFrontAnimator.cancel();
+        }
+        if (mBehindAnimator != null) {
+            mBehindAnimator.cancel();
+        }
+    }
+
+    private void startScrimAnimation(final boolean inFront, float target, long duration,
+            Interpolator interpolator) {
+        startScrimAnimation(inFront, target, duration, interpolator, 0 /* delay */,
+                null /* endRunnable */);
+    }
+
+    private void startScrimAnimation(final boolean inFront, float target, long duration,
+            Interpolator interpolator, long delay, final Runnable endRunnable) {
+        Animator current = getCurrentAnimator(inFront);
+        if (current != null) {
+            float currentTarget = getCurrentTarget(inFront);
+            if (currentTarget == target) {
+                return;
+            }
+            current.cancel();
+        }
+        ValueAnimator anim = ValueAnimator.ofFloat(getDozeAlpha(inFront), target);
+        anim.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() {
+            @Override
+            public void onAnimationUpdate(ValueAnimator animation) {
+                float value = (float) animation.getAnimatedValue();
+                setDozeAlpha(inFront, value);
+            }
+        });
+        anim.setInterpolator(interpolator);
+        anim.setDuration(duration);
+        anim.setStartDelay(delay);
+        anim.addListener(new AnimatorListenerAdapter() {
+            @Override
+            public void onAnimationEnd(Animator animation) {
+                setCurrentAnimator(inFront, null);
+                if (endRunnable != null) {
+                    endRunnable.run();
+                }
+            }
+        });
+        anim.start();
+        setCurrentAnimator(inFront, anim);
+        setCurrentTarget(inFront, target);
+    }
+
+    private float getCurrentTarget(boolean inFront) {
+        return inFront ? mInFrontTarget : mBehindTarget;
+    }
+
+    private void setCurrentTarget(boolean inFront, float target) {
+        if (inFront) {
+            mInFrontTarget = target;
+        } else {
+            mBehindTarget = target;
+        }
+    }
+
+    private Animator getCurrentAnimator(boolean inFront) {
+        return inFront ? mInFrontAnimator : mBehindAnimator;
+    }
+
+    private void setCurrentAnimator(boolean inFront, Animator animator) {
+        if (inFront) {
+            mInFrontAnimator = animator;
+        } else {
+            mBehindAnimator = animator;
+        }
+    }
+
+    private void setDozeAlpha(boolean inFront, float alpha) {
+        if (inFront) {
+            mScrimController.setDozeInFrontAlpha(alpha);
+        } else {
+            mScrimController.setDozeBehindAlpha(alpha);
+        }
+    }
+
+    private float getDozeAlpha(boolean inFront) {
+        return inFront
+                ? mScrimController.getDozeInFrontAlpha()
+                : mScrimController.getDozeBehindAlpha();
+    }
+
+    private final Runnable mPulseIn = new Runnable() {
+        @Override
+        public void run() {
+            if (DEBUG) Log.d(TAG, "Pulse in, mDozing=" + mDozing);
+            if (!mDozing) return;
+            DozeLog.tracePulseStart();
+            startScrimAnimation(true /* inFront */, 0f, mDozeParameters.getPulseInDuration(),
+                    mPulseInInterpolator, mDozeParameters.getPulseInDelay(), mPulseInFinished);
+
+            // Signal that the pulse is ready to turn the screen on and draw.
+            pulseStarted();
+        }
+    };
+
+    private final Runnable mPulseInFinished = new Runnable() {
+        @Override
+        public void run() {
+            if (DEBUG) Log.d(TAG, "Pulse in finished, mDozing=" + mDozing);
+            if (!mDozing) return;
+            mHandler.postDelayed(mPulseOut, mDozeParameters.getPulseVisibleDuration());
+        }
+    };
+
+    private final Runnable mPulseOut = new Runnable() {
+        @Override
+        public void run() {
+            if (DEBUG) Log.d(TAG, "Pulse out, mDozing=" + mDozing);
+            if (!mDozing) return;
+            startScrimAnimation(true /* inFront */, 1f, mDozeParameters.getPulseOutDuration(),
+                    mPulseOutInterpolator, 0 /* delay */, mPulseOutFinished);
+        }
+    };
+
+    private final Runnable mPulseOutFinished = new Runnable() {
+        @Override
+        public void run() {
+            if (DEBUG) Log.d(TAG, "Pulse out finished");
+            DozeLog.tracePulseFinish();
+
+            // Signal that the pulse is all finished so we can turn the screen off now.
+            pulseFinished();
+        }
+    };
+}
diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/phone/NotificationPanelView.java b/packages/SystemUI/src/com/android/systemui/statusbar/phone/NotificationPanelView.java
index 9d7d310..de99a82 100644
--- a/packages/SystemUI/src/com/android/systemui/statusbar/phone/NotificationPanelView.java
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/phone/NotificationPanelView.java
@@ -23,10 +23,7 @@
 import android.animation.ValueAnimator;
 import android.content.Context;
 import android.content.res.Configuration;
-import android.graphics.Color;
-import android.graphics.drawable.ColorDrawable;
 import android.util.AttributeSet;
-import android.util.LayoutDirection;
 import android.util.MathUtils;
 import android.view.MotionEvent;
 import android.view.VelocityTracker;
@@ -63,8 +60,6 @@
     private static final float HEADER_RUBBERBAND_FACTOR = 2.05f;
     private static final float LOCK_ICON_ACTIVE_SCALE = 1.2f;
 
-    private static final int DOZE_BACKGROUND_COLOR = 0xff000000;
-    private static final int TAG_KEY_ANIM = R.id.scrim;
     public static final long DOZE_ANIMATION_DURATION = 700;
 
     private KeyguardAffordanceHelper mAfforanceHelper;
@@ -1824,11 +1819,9 @@
         if (dozing == mDozing) return;
         mDozing = dozing;
         if (mDozing) {
-            setBackgroundColorAlpha(DOZE_BACKGROUND_COLOR, 0xff, false /*animate*/);
             mKeyguardStatusBar.setVisibility(View.INVISIBLE);
             mKeyguardBottomArea.setVisibility(View.INVISIBLE);
         } else {
-            setBackgroundColorAlpha(DOZE_BACKGROUND_COLOR, 0, animate);
             mKeyguardBottomArea.setVisibility(View.VISIBLE);
             mKeyguardStatusBar.setVisibility(View.VISIBLE);
             if (animate) {
@@ -1843,52 +1836,6 @@
         return mDozing;
     }
 
-    private void setBackgroundColorAlpha(int rgb, int targetAlpha,
-            boolean animate) {
-        int currentAlpha = getBackgroundAlpha(this);
-        if (currentAlpha == targetAlpha) {
-            return;
-        }
-        final int r = Color.red(rgb);
-        final int g = Color.green(rgb);
-        final int b = Color.blue(rgb);
-        Object runningAnim = getTag(TAG_KEY_ANIM);
-        if (runningAnim instanceof ValueAnimator) {
-            ((ValueAnimator) runningAnim).cancel();
-        }
-        if (!animate) {
-            setBackgroundColor(Color.argb(targetAlpha, r, g, b));
-            return;
-        }
-        ValueAnimator anim = ValueAnimator.ofInt(currentAlpha, targetAlpha);
-        anim.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() {
-            @Override
-            public void onAnimationUpdate(ValueAnimator animation) {
-                int value = (int) animation.getAnimatedValue();
-                setBackgroundColor(Color.argb(value, r, g, b));
-            }
-        });
-        anim.setInterpolator(mDozeAnimationInterpolator);
-        anim.setDuration(DOZE_ANIMATION_DURATION);
-        anim.addListener(new AnimatorListenerAdapter() {
-            @Override
-            public void onAnimationEnd(Animator animation) {
-                setTag(TAG_KEY_ANIM, null);
-            }
-        });
-        anim.start();
-        setTag(TAG_KEY_ANIM, anim);
-    }
-
-    private static int getBackgroundAlpha(View view) {
-        if (view.getBackground() instanceof ColorDrawable) {
-            ColorDrawable drawable = (ColorDrawable) view.getBackground();
-            return Color.alpha(drawable.getColor());
-        } else {
-            return 0;
-        }
-    }
-
     public void setShadeEmpty(boolean shadeEmpty) {
         mShadeEmpty = shadeEmpty;
         updateEmptyShadeView();
diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/phone/PhoneStatusBar.java b/packages/SystemUI/src/com/android/systemui/statusbar/phone/PhoneStatusBar.java
index 988534b..d94f122 100644
--- a/packages/SystemUI/src/com/android/systemui/statusbar/phone/PhoneStatusBar.java
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/phone/PhoneStatusBar.java
@@ -414,6 +414,7 @@
 
     private ViewMediatorCallback mKeyguardViewMediatorCallback;
     private ScrimController mScrimController;
+    private DozeScrimController mDozeScrimController;
 
     private final Runnable mAutohide = new Runnable() {
         @Override
@@ -741,6 +742,7 @@
         mScrimController = new ScrimController(scrimBehind, scrimInFront, mScrimSrcModeEnabled);
         mScrimController.setBackDropView(mBackdrop);
         mStatusBarView.setScrimController(mScrimController);
+        mDozeScrimController = new DozeScrimController(mScrimController, context);
 
         mHeader = (StatusBarHeaderView) mStatusBarWindow.findViewById(R.id.header);
         mHeader.setActivityStarter(this);
@@ -3677,13 +3679,14 @@
         if (mState != StatusBarState.KEYGUARD && !mNotificationPanel.isDozing()) {
             return;
         }
-        mNotificationPanel.setDozing(mDozing, mScrimController.isPulsing() /*animate*/);
+        mNotificationPanel.setDozing(mDozing, mDozeScrimController.isPulsing() /*animate*/);
         if (mDozing) {
             mStackScroller.setDark(true, false /*animate*/);
         } else {
             mStackScroller.setDark(false, false /*animate*/);
         }
-        mScrimController.setDozing(mDozing, mScrimController.isPulsing() /*animate*/);
+        mScrimController.setDozing(mDozing);
+        mDozeScrimController.setDozing(mDozing, mDozeScrimController.isPulsing() /* animate */);
     }
 
     public void updateStackScrollerState(boolean goingToFullShade) {
@@ -4060,11 +4063,12 @@
     }
 
     public void wakeUpIfDozing(long time, boolean fromTouch) {
-        if (mDozing && mScrimController.isPulsing()) {
+        if (mDozing && mDozeScrimController.isPulsing()) {
             PowerManager pm = (PowerManager) mContext.getSystemService(Context.POWER_SERVICE);
             pm.wakeUp(time);
             if (fromTouch) {
                 mScreenOnComingFromTouch = true;
+                mNotificationPanel.setTouchDisabled(false);
             }
         }
     }
@@ -4174,7 +4178,7 @@
         }
 
         private void handlePulseWhileDozing(@NonNull PulseCallback callback) {
-            mScrimController.pulse(callback);
+            mDozeScrimController.pulse(callback);
         }
 
         private void handleStopDozing() {
diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/phone/ScrimController.java b/packages/SystemUI/src/com/android/systemui/statusbar/phone/ScrimController.java
index 10d6594..d6bd94b 100644
--- a/packages/SystemUI/src/com/android/systemui/statusbar/phone/ScrimController.java
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/phone/ScrimController.java
@@ -19,20 +19,15 @@
 import android.animation.Animator;
 import android.animation.AnimatorListenerAdapter;
 import android.animation.ValueAnimator;
-import android.annotation.NonNull;
 import android.content.Context;
 import android.graphics.Color;
-import android.util.Log;
 import android.view.View;
 import android.view.ViewTreeObserver;
 import android.view.animation.AnimationUtils;
 import android.view.animation.DecelerateInterpolator;
 import android.view.animation.Interpolator;
-import android.view.animation.PathInterpolator;
 
 import com.android.systemui.R;
-import com.android.systemui.doze.DozeHost;
-import com.android.systemui.doze.DozeLog;
 import com.android.systemui.statusbar.BackDropView;
 import com.android.systemui.statusbar.ScrimView;
 
@@ -41,9 +36,6 @@
  * security method gets shown).
  */
 public class ScrimController implements ViewTreeObserver.OnPreDrawListener {
-    private static final String TAG = "ScrimController";
-    private static final boolean DEBUG = Log.isLoggable(TAG, Log.DEBUG);
-
     public static final long ANIMATION_DURATION = 220;
 
     private static final float SCRIM_BEHIND_ALPHA = 0.62f;
@@ -55,7 +47,6 @@
     private final ScrimView mScrimBehind;
     private final ScrimView mScrimInFront;
     private final UnlockMethodCache mUnlockMethodCache;
-    private final DozeParameters mDozeParameters;
 
     private boolean mKeyguardShowing;
     private float mFraction;
@@ -70,15 +61,15 @@
     private long mAnimationDelay;
     private Runnable mOnAnimationFinished;
     private boolean mAnimationStarted;
-    private boolean mDozing;
-    private boolean mPulsingOut;
-    private DozeHost.PulseCallback mPulseCallback;
     private final Interpolator mInterpolator = new DecelerateInterpolator();
     private final Interpolator mLinearOutSlowInInterpolator;
-    private final Interpolator mPulseInInterpolator = PhoneStatusBar.ALPHA_OUT;
-    private final Interpolator mPulseOutInterpolator = PhoneStatusBar.ALPHA_IN;
     private BackDropView mBackDropView;
     private boolean mScrimSrcEnabled;
+    private boolean mDozing;
+    private float mDozeInFrontAlpha;
+    private float mDozeBehindAlpha;
+    private float mCurrentInFrontAlpha;
+    private float mCurrentBehindAlpha;
 
     public ScrimController(ScrimView scrimBehind, ScrimView scrimInFront, boolean scrimSrcEnabled) {
         mScrimBehind = scrimBehind;
@@ -87,7 +78,6 @@
         mUnlockMethodCache = UnlockMethodCache.getInstance(context);
         mLinearOutSlowInInterpolator = AnimationUtils.loadInterpolator(context,
                 android.R.interpolator.linear_out_slow_in);
-        mDozeParameters = new DozeParameters(context);
         mScrimSrcEnabled = scrimSrcEnabled;
     }
 
@@ -134,60 +124,27 @@
         scheduleUpdate();
     }
 
-    public void setDozing(boolean dozing, boolean animate) {
-        if (mDozing == dozing) return;
+    public void setDozing(boolean dozing) {
         mDozing = dozing;
-        if (!mDozing) {
-            cancelPulsing();
-            mAnimateChange = animate;
-        }
         scheduleUpdate();
     }
 
-    /** When dozing, fade screen contents in and out using the front scrim. */
-    public void pulse(@NonNull DozeHost.PulseCallback callback) {
-        if (callback == null) {
-            throw new IllegalArgumentException("callback must not be null");
-        }
-
-        if (!mDozing || mPulseCallback != null) {
-            // Pulse suppressed.
-            callback.onPulseFinished();
-            return;
-        }
-
-        // Begin pulse.  Note that it's very important that the pulse finished callback
-        // be invoked when we're done so that the caller can drop the pulse wakelock.
-        mPulseCallback = callback;
-        mScrimInFront.post(mPulseIn);
+    public void setDozeInFrontAlpha(float alpha) {
+        mDozeInFrontAlpha = alpha;
+        updateScrimColor(mScrimInFront);
     }
 
-    public boolean isPulsing() {
-        return mPulseCallback != null;
+    public void setDozeBehindAlpha(float alpha) {
+        mDozeBehindAlpha = alpha;
+        updateScrimColor(mScrimBehind);
     }
 
-    private void cancelPulsing() {
-        if (DEBUG) Log.d(TAG, "Cancel pulsing");
-
-        if (mPulseCallback != null) {
-            mScrimInFront.removeCallbacks(mPulseIn);
-            mScrimInFront.removeCallbacks(mPulseOut);
-            pulseFinished();
-        }
+    public float getDozeBehindAlpha() {
+        return mDozeBehindAlpha;
     }
 
-    private void pulseStarted() {
-        if (mPulseCallback != null) {
-            mPulseCallback.onPulseStarted();
-        }
-    }
-
-    private void pulseFinished() {
-        mPulsingOut = false;
-        if (mPulseCallback != null) {
-            mPulseCallback.onPulseFinished();
-            mPulseCallback = null;
-        }
+    public float getDozeInFrontAlpha() {
+        return mDozeInFrontAlpha;
     }
 
     private void scheduleUpdate() {
@@ -223,12 +180,6 @@
         } else if (mBouncerShowing) {
             setScrimInFrontColor(SCRIM_IN_FRONT_ALPHA);
             setScrimBehindColor(0f);
-        } else if (mDozing && isPulsing() && !mPulsingOut) {
-            setScrimInFrontColor(0);
-            setScrimBehindColor(SCRIM_BEHIND_ALPHA_KEYGUARD);
-        } else if (mDozing) {
-            setScrimInFrontColor(1);
-            setScrimBehindColor(SCRIM_BEHIND_ALPHA_KEYGUARD);
         } else {
             float fraction = Math.max(0, Math.min(mFraction, 1));
             setScrimInFrontColor(0f);
@@ -272,26 +223,46 @@
             ((ValueAnimator) runningAnim).cancel();
             scrim.setTag(TAG_KEY_ANIM, null);
         }
-        int color = Color.argb((int) (alpha * 255), 0, 0, 0);
         if (mAnimateChange) {
-            startScrimAnimation(scrim, color);
+            startScrimAnimation(scrim, alpha);
         } else {
-            scrim.setScrimColor(color);
+            setCurrentScrimAlpha(scrim, alpha);
+            updateScrimColor(scrim);
         }
     }
 
-    private void startScrimAnimation(final ScrimView scrim, int targetColor) {
-        int current = Color.alpha(scrim.getScrimColor());
-        int target = Color.alpha(targetColor);
-        if (current == target) {
-            return;
+    private float getDozeAlpha(View scrim) {
+        return scrim == mScrimBehind ? mDozeBehindAlpha : mDozeInFrontAlpha;
+    }
+
+    private float getCurrentScrimAlpha(View scrim) {
+        return scrim == mScrimBehind ? mCurrentBehindAlpha : mCurrentInFrontAlpha;
+    }
+
+    private void setCurrentScrimAlpha(View scrim, float alpha) {
+        if (scrim == mScrimBehind) {
+            mCurrentBehindAlpha = alpha;
+        } else {
+            mCurrentInFrontAlpha = alpha;
         }
-        ValueAnimator anim = ValueAnimator.ofInt(current, target);
+    }
+
+    private void updateScrimColor(ScrimView scrim) {
+        float alpha1 = getCurrentScrimAlpha(scrim);
+        float alpha2 = getDozeAlpha(scrim);
+        float alpha = 1 - (1 - alpha1) * (1 - alpha2);
+        scrim.setScrimColor(Color.argb((int) (alpha * 255), 0, 0, 0));
+    }
+
+    private void startScrimAnimation(final ScrimView scrim, float target) {
+        float current = getCurrentScrimAlpha(scrim);
+        ValueAnimator anim = ValueAnimator.ofFloat(current, target);
         anim.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() {
             @Override
             public void onAnimationUpdate(ValueAnimator animation) {
-                int value = (int) animation.getAnimatedValue();
-                scrim.setScrimColor(Color.argb(value, 0, 0, 0));
+                float alpha = (float) animation.getAnimatedValue();
+                setCurrentScrimAlpha(scrim, alpha);
+                updateScrimColor(scrim);
             }
         });
         anim.setInterpolator(getInterpolator());
@@ -313,15 +284,7 @@
     }
 
     private Interpolator getInterpolator() {
-       if (mAnimateKeyguardFadingOut) {
-           return mLinearOutSlowInInterpolator;
-       } else if (isPulsing() && !mPulsingOut) {
-           return mPulseInInterpolator;
-       } else if (isPulsing()) {
-           return mPulseOutInterpolator;
-       } else {
-           return mInterpolator;
-       }
+        return mAnimateKeyguardFadingOut ? mLinearOutSlowInInterpolator : mInterpolator;
     }
 
     @Override
@@ -342,56 +305,6 @@
         return true;
     }
 
-    private final Runnable mPulseIn = new Runnable() {
-        @Override
-        public void run() {
-            if (DEBUG) Log.d(TAG, "Pulse in, mDozing=" + mDozing);
-            if (!mDozing) return;
-            DozeLog.tracePulseStart();
-            mDurationOverride = mDozeParameters.getPulseInDuration();
-            mAnimationDelay = mDozeParameters.getPulseInDelay();
-            mAnimateChange = true;
-            mOnAnimationFinished = mPulseInFinished;
-            scheduleUpdate();
-
-            // Signal that the pulse is ready to turn the screen on and draw.
-            pulseStarted();
-        }
-    };
-
-    private final Runnable mPulseInFinished = new Runnable() {
-        @Override
-        public void run() {
-            if (DEBUG) Log.d(TAG, "Pulse in finished, mDozing=" + mDozing);
-            if (!mDozing) return;
-            mScrimInFront.postDelayed(mPulseOut, mDozeParameters.getPulseVisibleDuration());
-        }
-    };
-
-    private final Runnable mPulseOut = new Runnable() {
-        @Override
-        public void run() {
-            if (DEBUG) Log.d(TAG, "Pulse out, mDozing=" + mDozing);
-            if (!mDozing) return;
-            mDurationOverride = mDozeParameters.getPulseOutDuration();
-            mAnimateChange = true;
-            mOnAnimationFinished = mPulseOutFinished;
-            mPulsingOut = true;
-            scheduleUpdate();
-        }
-    };
-
-    private final Runnable mPulseOutFinished = new Runnable() {
-        @Override
-        public void run() {
-            if (DEBUG) Log.d(TAG, "Pulse out finished");
-            DozeLog.tracePulseFinish();
-
-            // Signal that the pulse is all finished so we can turn the screen off now.
-            pulseFinished();
-        }
-    };
-
     public void setBackDropView(BackDropView backDropView) {
         mBackDropView = backDropView;
         mBackDropView.setOnVisibilityChangedRunnable(new Runnable() {
diff --git a/services/core/java/com/android/server/accounts/AccountManagerService.java b/services/core/java/com/android/server/accounts/AccountManagerService.java
index d480f68..85eed859 100644
--- a/services/core/java/com/android/server/accounts/AccountManagerService.java
+++ b/services/core/java/com/android/server/accounts/AccountManagerService.java
@@ -77,7 +77,6 @@
 import com.android.internal.util.ArrayUtils;
 import com.android.internal.util.IndentingPrintWriter;
 import com.android.server.FgThread;
-
 import com.google.android.collect.Lists;
 import com.google.android.collect.Sets;
 
@@ -1043,7 +1042,8 @@
     }
 
     @Override
-    public void removeAccount(IAccountManagerResponse response, Account account) {
+    public void removeAccount(IAccountManagerResponse response, Account account,
+            boolean expectActivityLaunch) {
         if (Log.isLoggable(TAG, Log.VERBOSE)) {
             Log.v(TAG, "removeAccount: " + account
                     + ", response " + response
@@ -1088,7 +1088,7 @@
         }
 
         try {
-            new RemoveAccountSession(accounts, response, account).bind();
+            new RemoveAccountSession(accounts, response, account, expectActivityLaunch).bind();
         } finally {
             restoreCallingIdentity(identityToken);
         }
@@ -1096,7 +1096,7 @@
 
     @Override
     public void removeAccountAsUser(IAccountManagerResponse response, Account account,
-            int userId) {
+            boolean expectActivityLaunch, int userId) {
         if (Log.isLoggable(TAG, Log.VERBOSE)) {
             Log.v(TAG, "removeAccount: " + account
                     + ", response " + response
@@ -1145,7 +1145,30 @@
         }
 
         try {
-            new RemoveAccountSession(accounts, response, account).bind();
+            new RemoveAccountSession(accounts, response, account, expectActivityLaunch).bind();
+        } finally {
+            restoreCallingIdentity(identityToken);
+        }
+    }
+
+    @Override
+    public boolean removeAccountExplicitly(Account account) {
+        if (Log.isLoggable(TAG, Log.VERBOSE)) {
+            Log.v(TAG, "removeAccountExplicitly: " + account
+                    + ", caller's uid " + Binder.getCallingUid()
+                    + ", pid " + Binder.getCallingPid());
+        }
+        if (account == null) throw new IllegalArgumentException("account is null");
+        checkAuthenticateAccountsPermission(account);
+
+        UserAccounts accounts = getUserAccountsForCaller();
+        int userId = Binder.getCallingUserHandle().getIdentifier();
+        if (!canUserModifyAccounts(userId) || !canUserModifyAccountsForType(userId, account.type)) {
+            return false;
+        }
+        long identityToken = clearCallingIdentity();
+        try {
+            return removeAccountInternal(accounts, account);
         } finally {
             restoreCallingIdentity(identityToken);
         }
@@ -1154,8 +1177,8 @@
     private class RemoveAccountSession extends Session {
         final Account mAccount;
         public RemoveAccountSession(UserAccounts accounts, IAccountManagerResponse response,
-                Account account) {
-            super(accounts, response, account.type, false /* expectActivityLaunch */,
+                Account account, boolean expectActivityLaunch) {
+            super(accounts, response, account.type, expectActivityLaunch,
                     true /* stripAuthTokenFromResult */);
             mAccount = account;
         }
@@ -1203,10 +1226,12 @@
         removeAccountInternal(getUserAccountsForCaller(), account);
     }
 
-    private void removeAccountInternal(UserAccounts accounts, Account account) {
+    private boolean removeAccountInternal(UserAccounts accounts, Account account) {
+        int deleted;
         synchronized (accounts.cacheLock) {
             final SQLiteDatabase db = accounts.openHelper.getWritableDatabase();
-            db.delete(TABLE_ACCOUNTS, ACCOUNTS_NAME + "=? AND " + ACCOUNTS_TYPE+ "=?",
+            deleted = db.delete(TABLE_ACCOUNTS, ACCOUNTS_NAME + "=? AND " + ACCOUNTS_TYPE
+                    + "=?",
                     new String[]{account.name, account.type});
             removeAccountFromCacheLocked(accounts, account);
             sendAccountsChangedBroadcast(accounts.userId);
@@ -1226,6 +1251,7 @@
                 Binder.restoreCallingIdentity(id);
             }
         }
+        return (deleted > 0);
     }
 
     @Override
diff --git a/services/core/java/com/android/server/am/ActivityStackSupervisor.java b/services/core/java/com/android/server/am/ActivityStackSupervisor.java
index 120002e..38809cb 100644
--- a/services/core/java/com/android/server/am/ActivityStackSupervisor.java
+++ b/services/core/java/com/android/server/am/ActivityStackSupervisor.java
@@ -121,7 +121,7 @@
     static final boolean DEBUG_RELEASE = DEBUG || false;
     static final boolean DEBUG_SAVED_STATE = DEBUG || false;
     static final boolean DEBUG_SCREENSHOTS = DEBUG || false;
-    static final boolean DEBUG_STATES = DEBUG || true;
+    static final boolean DEBUG_STATES = DEBUG || false;
     static final boolean DEBUG_VISIBLE_BEHIND = DEBUG || false;
 
     public static final int HOME_STACK_ID = 0;
diff --git a/services/core/java/com/android/server/media/MediaSessionService.java b/services/core/java/com/android/server/media/MediaSessionService.java
index 02c9fcb5..ba18f48 100644
--- a/services/core/java/com/android/server/media/MediaSessionService.java
+++ b/services/core/java/com/android/server/media/MediaSessionService.java
@@ -805,7 +805,12 @@
                         + flags + ", suggestedStream=" + suggestedStream);
 
             }
-            if (session == null) {
+            boolean preferSuggestedStream = false;
+            if (isValidLocalStreamType(suggestedStream)
+                    && AudioSystem.isStreamActive(suggestedStream, 0)) {
+                preferSuggestedStream = true;
+            }
+            if (session == null || preferSuggestedStream) {
                 if ((flags & AudioManager.FLAG_ACTIVE_MEDIA_ONLY) != 0
                         && !AudioSystem.isStreamActive(AudioManager.STREAM_MUSIC, 0)) {
                     if (DEBUG) {
@@ -959,6 +964,12 @@
             return keyCode == KeyEvent.KEYCODE_HEADSETHOOK;
         }
 
+        // we only handle public stream types, which are 0-5
+        private boolean isValidLocalStreamType(int streamType) {
+            return streamType >= AudioManager.STREAM_VOICE_CALL
+                    && streamType <= AudioManager.STREAM_NOTIFICATION;
+        }
+
         private KeyEventWakeLockReceiver mKeyEventReceiver = new KeyEventWakeLockReceiver(mHandler);
 
         class KeyEventWakeLockReceiver extends ResultReceiver implements Runnable,
diff --git a/services/core/java/com/android/server/pm/PackageManagerService.java b/services/core/java/com/android/server/pm/PackageManagerService.java
index 9a2451e..b1ff398 100644
--- a/services/core/java/com/android/server/pm/PackageManagerService.java
+++ b/services/core/java/com/android/server/pm/PackageManagerService.java
@@ -8982,6 +8982,7 @@
                         && isVerificationEnabled(userIdentifier, installFlags)) {
                     final Intent verification = new Intent(
                             Intent.ACTION_PACKAGE_NEEDS_VERIFICATION);
+                    verification.addFlags(Intent.FLAG_RECEIVER_FOREGROUND);
                     verification.setDataAndType(Uri.fromFile(new File(origin.resolvedPath)),
                             PACKAGE_MIME_TYPE);
                     verification.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
diff --git a/services/core/java/com/android/server/wm/WindowManagerService.java b/services/core/java/com/android/server/wm/WindowManagerService.java
index eb418ed6..bcfd7f0 100644
--- a/services/core/java/com/android/server/wm/WindowManagerService.java
+++ b/services/core/java/com/android/server/wm/WindowManagerService.java
@@ -2541,7 +2541,7 @@
             }
             mInputMonitor.updateInputWindowsLw(false /*force*/);
 
-            if (true || localLOGV || DEBUG_ADD_REMOVE) Slog.v(TAG, "addWindow: New client "
+            if (localLOGV || DEBUG_ADD_REMOVE) Slog.v(TAG, "addWindow: New client "
                     + client.asBinder() + ": window=" + win + " Callers=" + Debug.getCallers(5));
 
             if (win.isVisibleOrAdding() && updateOrientationFromAppTokensLocked(false)) {
@@ -2706,8 +2706,7 @@
         mPolicy.removeWindowLw(win);
         win.removeLocked();
 
-        if (true || DEBUG_ADD_REMOVE) Slog.v(TAG, "removeWindowInnerLocked: " + win +
-                " Callers=" + Debug.getCallers(5));
+        if (DEBUG_ADD_REMOVE) Slog.v(TAG, "removeWindowInnerLocked: " + win);
         mWindowMap.remove(win.mClient.asBinder());
         if (win.mAppOp != AppOpsManager.OP_NONE) {
             mAppOps.finishOp(win.mAppOp, win.getOwningUid(), win.getOwningPackage());