diff --git a/core/java/android/app/ActivityThread.java b/core/java/android/app/ActivityThread.java
index 161cb76..4cf30ae 100644
--- a/core/java/android/app/ActivityThread.java
+++ b/core/java/android/app/ActivityThread.java
@@ -47,6 +47,7 @@
 import android.net.IConnectivityManager;
 import android.net.Proxy;
 import android.net.ProxyInfo;
+import android.net.Uri;
 import android.opengl.GLUtils;
 import android.os.AsyncTask;
 import android.os.Binder;
@@ -839,7 +840,7 @@
             InetAddress.clearDnsCache();
         }
 
-        public void setHttpProxy(String host, String port, String exclList, String pacFileUrl) {
+        public void setHttpProxy(String host, String port, String exclList, Uri pacFileUrl) {
             Proxy.setHttpProxySystemProperty(host, port, exclList, pacFileUrl);
         }
 
diff --git a/core/java/android/app/ApplicationThreadNative.java b/core/java/android/app/ApplicationThreadNative.java
index e7902a9..0029efa 100644
--- a/core/java/android/app/ApplicationThreadNative.java
+++ b/core/java/android/app/ApplicationThreadNative.java
@@ -25,6 +25,7 @@
 import android.content.pm.ServiceInfo;
 import android.content.res.CompatibilityInfo;
 import android.content.res.Configuration;
+import android.net.Uri;
 import android.os.Binder;
 import android.os.Bundle;
 import android.os.Debug;
@@ -339,7 +340,7 @@
             final String proxy = data.readString();
             final String port = data.readString();
             final String exclList = data.readString();
-            final String pacFileUrl = data.readString();
+            final Uri pacFileUrl = Uri.CREATOR.createFromParcel(data);
             setHttpProxy(proxy, port, exclList, pacFileUrl);
             return true;
         }
@@ -1008,13 +1009,13 @@
     }
 
     public void setHttpProxy(String proxy, String port, String exclList,
-            String pacFileUrl) throws RemoteException {
+            Uri pacFileUrl) throws RemoteException {
         Parcel data = Parcel.obtain();
         data.writeInterfaceToken(IApplicationThread.descriptor);
         data.writeString(proxy);
         data.writeString(port);
         data.writeString(exclList);
-        data.writeString(pacFileUrl);
+        pacFileUrl.writeToParcel(data, 0);
         mRemote.transact(SET_HTTP_PROXY_TRANSACTION, data, null, IBinder.FLAG_ONEWAY);
         data.recycle();
     }
diff --git a/core/java/android/app/IApplicationThread.java b/core/java/android/app/IApplicationThread.java
index a832034..d5fbd0b 100644
--- a/core/java/android/app/IApplicationThread.java
+++ b/core/java/android/app/IApplicationThread.java
@@ -25,6 +25,7 @@
 import android.content.pm.ServiceInfo;
 import android.content.res.CompatibilityInfo;
 import android.content.res.Configuration;
+import android.net.Uri;
 import android.os.Bundle;
 import android.os.Debug;
 import android.os.ParcelFileDescriptor;
@@ -106,7 +107,7 @@
     void updateTimeZone() throws RemoteException;
     void clearDnsCache() throws RemoteException;
     void setHttpProxy(String proxy, String port, String exclList,
-            String pacFileUrl) throws RemoteException;
+            Uri pacFileUrl) throws RemoteException;
     void processInBackground() throws RemoteException;
     void dumpService(FileDescriptor fd, IBinder servicetoken, String[] args)
             throws RemoteException;
diff --git a/core/java/android/net/Proxy.java b/core/java/android/net/Proxy.java
index daf0065..6a78c29 100644
--- a/core/java/android/net/Proxy.java
+++ b/core/java/android/net/Proxy.java
@@ -273,21 +273,19 @@
         String host = null;
         String port = null;
         String exclList = null;
-        String pacFileUrl = null;
+        Uri pacFileUrl = Uri.EMPTY;
         if (p != null) {
             host = p.getHost();
             port = Integer.toString(p.getPort());
             exclList = p.getExclusionListAsString();
-            if (p.getPacFileUrl() != null) {
-                pacFileUrl = p.getPacFileUrl().toString();
-            }
+            pacFileUrl = p.getPacFileUrl();
         }
         setHttpProxySystemProperty(host, port, exclList, pacFileUrl);
     }
 
     /** @hide */
     public static final void setHttpProxySystemProperty(String host, String port, String exclList,
-            String pacFileUrl) {
+            Uri pacFileUrl) {
         if (exclList != null) exclList = exclList.replace(",", "|");
         if (false) Log.d(TAG, "setHttpProxySystemProperty :"+host+":"+port+" - "+exclList);
         if (host != null) {
@@ -311,7 +309,7 @@
             System.clearProperty("http.nonProxyHosts");
             System.clearProperty("https.nonProxyHosts");
         }
-        if (!TextUtils.isEmpty(pacFileUrl)) {
+        if (!Uri.EMPTY.equals(pacFileUrl)) {
             ProxySelector.setDefault(new PacProxySelector());
         } else {
             ProxySelector.setDefault(sDefaultProxySelector);
diff --git a/core/java/android/net/ProxyInfo.java b/core/java/android/net/ProxyInfo.java
index b40941f..991d9da 100644
--- a/core/java/android/net/ProxyInfo.java
+++ b/core/java/android/net/ProxyInfo.java
@@ -44,7 +44,7 @@
     private String mExclusionList;
     private String[] mParsedExclusionList;
 
-    private String mPacFileUrl;
+    private Uri mPacFileUrl;
     /**
      *@hide
      */
@@ -85,7 +85,7 @@
      * at the specified URL.
      */
     public static ProxyInfo buildPacProxy(Uri pacUri) {
-        return new ProxyInfo(pacUri.toString());
+        return new ProxyInfo(pacUri);
     }
 
     /**
@@ -96,6 +96,21 @@
         mHost = host;
         mPort = port;
         setExclusionList(exclList);
+        mPacFileUrl = Uri.EMPTY;
+    }
+
+    /**
+     * Create a ProxyProperties that points at a PAC URL.
+     * @hide
+     */
+    public ProxyInfo(Uri pacFileUrl) {
+        mHost = LOCAL_HOST;
+        mPort = LOCAL_PORT;
+        setExclusionList(LOCAL_EXCL_LIST);
+        if (pacFileUrl == null) {
+            throw new NullPointerException();
+        }
+        mPacFileUrl = pacFileUrl;
     }
 
     /**
@@ -106,17 +121,20 @@
         mHost = LOCAL_HOST;
         mPort = LOCAL_PORT;
         setExclusionList(LOCAL_EXCL_LIST);
-        mPacFileUrl = pacFileUrl;
+        mPacFileUrl = Uri.parse(pacFileUrl);
     }
 
     /**
      * Only used in PacManager after Local Proxy is bound.
      * @hide
      */
-    public ProxyInfo(String pacFileUrl, int localProxyPort) {
+    public ProxyInfo(Uri pacFileUrl, int localProxyPort) {
         mHost = LOCAL_HOST;
         mPort = localProxyPort;
         setExclusionList(LOCAL_EXCL_LIST);
+        if (pacFileUrl == null) {
+            throw new NullPointerException();
+        }
         mPacFileUrl = pacFileUrl;
     }
 
@@ -125,7 +143,7 @@
         mPort = port;
         mExclusionList = exclList;
         mParsedExclusionList = parsedExclList;
-        mPacFileUrl = null;
+        mPacFileUrl = Uri.EMPTY;
     }
 
     // copy constructor instead of clone
@@ -137,6 +155,9 @@
             mHost = source.getHost();
             mPort = source.getPort();
             mPacFileUrl = source.mPacFileUrl;
+            if (mPacFileUrl == null) {
+                mPacFileUrl = Uri.EMPTY;
+            }
             mExclusionList = source.getExclusionListAsString();
             mParsedExclusionList = source.mParsedExclusionList;
         }
@@ -158,10 +179,7 @@
      * no PAC script.
      */
     public Uri getPacFileUrl() {
-        if (TextUtils.isEmpty(mPacFileUrl)) {
-            return null;
-        }
-        return Uri.parse(mPacFileUrl);
+        return mPacFileUrl;
     }
 
     /**
@@ -210,7 +228,7 @@
      * @hide
      */
     public boolean isValid() {
-        if (!TextUtils.isEmpty(mPacFileUrl)) return true;
+        if (!Uri.EMPTY.equals(mPacFileUrl)) return true;
         return Proxy.PROXY_VALID == Proxy.validate(mHost == null ? "" : mHost,
                                                 mPort == 0 ? "" : Integer.toString(mPort),
                                                 mExclusionList == null ? "" : mExclusionList);
@@ -234,7 +252,7 @@
     @Override
     public String toString() {
         StringBuilder sb = new StringBuilder();
-        if (mPacFileUrl != null) {
+        if (!Uri.EMPTY.equals(mPacFileUrl)) {
             sb.append("PAC Script: ");
             sb.append(mPacFileUrl);
         } else if (mHost != null) {
@@ -257,13 +275,15 @@
         ProxyInfo p = (ProxyInfo)o;
         // If PAC URL is present in either then they must be equal.
         // Other parameters will only be for fall back.
-        if (!TextUtils.isEmpty(mPacFileUrl)) {
+        if (!Uri.EMPTY.equals(mPacFileUrl)) {
             return mPacFileUrl.equals(p.getPacFileUrl()) && mPort == p.mPort;
         }
-        if (!TextUtils.isEmpty(p.mPacFileUrl)) {
+        if (!Uri.EMPTY.equals(p.mPacFileUrl)) {
             return false;
         }
-        if (mExclusionList != null && !mExclusionList.equals(p.getExclusionListAsString())) return false;
+        if (mExclusionList != null && !mExclusionList.equals(p.getExclusionListAsString())) {
+            return false;
+        }
         if (mHost != null && p.getHost() != null && mHost.equals(p.getHost()) == false) {
             return false;
         }
@@ -296,9 +316,9 @@
      * @hide
      */
     public void writeToParcel(Parcel dest, int flags) {
-        if (mPacFileUrl != null) {
+        if (!Uri.EMPTY.equals(mPacFileUrl)) {
             dest.writeByte((byte)1);
-            dest.writeString(mPacFileUrl);
+            mPacFileUrl.writeToParcel(dest, 0);
             dest.writeInt(mPort);
             return;
         } else {
@@ -325,7 +345,7 @@
                 String host = null;
                 int port = 0;
                 if (in.readByte() != 0) {
-                    String url = in.readString();
+                    Uri url = Uri.CREATOR.createFromParcel(in);
                     int localPort = in.readInt();
                     return new ProxyInfo(url, localPort);
                 }
diff --git a/services/core/java/com/android/server/am/ActivityManagerService.java b/services/core/java/com/android/server/am/ActivityManagerService.java
index 5358c1a..344268a 100644
--- a/services/core/java/com/android/server/am/ActivityManagerService.java
+++ b/services/core/java/com/android/server/am/ActivityManagerService.java
@@ -1328,14 +1328,12 @@
                 String host = "";
                 String port = "";
                 String exclList = "";
-                String pacFileUrl = "";
+                Uri pacFileUrl = Uri.EMPTY;
                 if (proxy != null) {
                     host = proxy.getHost();
                     port = Integer.toString(proxy.getPort());
                     exclList = proxy.getExclusionListAsString();
-                    if (proxy.getPacFileUrl() != null) {
-                        pacFileUrl = proxy.getPacFileUrl().toString();
-                    }
+                    pacFileUrl = proxy.getPacFileUrl();
                 }
                 synchronized (ActivityManagerService.this) {
                     for (int i = mLruProcesses.size() - 1 ; i >= 0 ; i--) {
diff --git a/services/core/java/com/android/server/connectivity/PacManager.java b/services/core/java/com/android/server/connectivity/PacManager.java
index 0749f24..63178eb 100644
--- a/services/core/java/com/android/server/connectivity/PacManager.java
+++ b/services/core/java/com/android/server/connectivity/PacManager.java
@@ -25,6 +25,7 @@
 import android.content.IntentFilter;
 import android.content.ServiceConnection;
 import android.net.ProxyInfo;
+import android.net.Uri;
 import android.os.Handler;
 import android.os.IBinder;
 import android.os.RemoteException;
@@ -32,7 +33,6 @@
 import android.os.SystemClock;
 import android.os.SystemProperties;
 import android.provider.Settings;
-import android.text.TextUtils;
 import android.util.Log;
 
 import com.android.internal.annotations.GuardedBy;
@@ -71,7 +71,7 @@
     public static final String KEY_PROXY = "keyProxy";
     private String mCurrentPac;
     @GuardedBy("mProxyLock")
-    private String mPacUrl;
+    private Uri mPacUrl;
 
     private AlarmManager mAlarmManager;
     @GuardedBy("mProxyLock")
@@ -100,7 +100,7 @@
         public void run() {
             String file;
             synchronized (mProxyLock) {
-                if (mPacUrl == null) return;
+                if (Uri.EMPTY.equals(mPacUrl)) return;
                 try {
                     file = get(mPacUrl);
                 } catch (IOException ioe) {
@@ -158,13 +158,13 @@
      * @return Returns true when the broadcast should not be sent
      */
     public synchronized boolean setCurrentProxyScriptUrl(ProxyInfo proxy) {
-        if (proxy.getPacFileUrl() != null) {
+        if (!Uri.EMPTY.equals(proxy.getPacFileUrl())) {
             if (proxy.getPacFileUrl().equals(mPacUrl) && (proxy.getPort() > 0)) {
                 // Allow to send broadcast, nothing to do.
                 return false;
             }
             synchronized (mProxyLock) {
-                mPacUrl = proxy.getPacFileUrl().toString();
+                mPacUrl = proxy.getPacFileUrl();
             }
             mCurrentDelay = DELAY_1;
             mHasSentBroadcast = false;
@@ -196,8 +196,8 @@
      *
      * @throws IOException
      */
-    private static String get(String urlString) throws IOException {
-        URL url = new URL(urlString);
+    private static String get(Uri pacUri) throws IOException {
+        URL url = new URL(pacUri.toString());
         URLConnection urlConnection = url.openConnection(java.net.Proxy.NO_PROXY);
         return new String(Streams.readFully(urlConnection.getInputStream()));
     }