Use the Deletion Helper when system storage is low.

A notification is posted when the system storage gets too low.
Currently, it redirects into the Storage Settings. Instead,
it should redirect into the Deletion Helper to directly let the
user clear out their storage.

Bug: 29437277
Change-Id: I4e35adf300d5e479d4171f1e6f090f2a757400f2
diff --git a/api/current.txt b/api/current.txt
index 38af43f..0e93c25 100644
--- a/api/current.txt
+++ b/api/current.txt
@@ -29600,6 +29600,7 @@
     method public boolean isObbMounted(java.lang.String);
     method public boolean mountObb(java.lang.String, java.lang.String, android.os.storage.OnObbStateChangeListener);
     method public boolean unmountObb(java.lang.String, boolean, android.os.storage.OnObbStateChangeListener);
+    field public static final java.lang.String ACTION_MANAGE_STORAGE = "android.os.storage.action.MANAGE_STORAGE";
   }
 
   public final class StorageVolume implements android.os.Parcelable {
@@ -32385,7 +32386,6 @@
     field public static final java.lang.String ACTION_CAST_SETTINGS = "android.settings.CAST_SETTINGS";
     field public static final java.lang.String ACTION_DATA_ROAMING_SETTINGS = "android.settings.DATA_ROAMING_SETTINGS";
     field public static final java.lang.String ACTION_DATE_SETTINGS = "android.settings.DATE_SETTINGS";
-    field public static final java.lang.String ACTION_DELETION_HELPER_SETTINGS = "android.settings.DELETION_HELPER_SETTINGS";
     field public static final java.lang.String ACTION_DEVICE_INFO_SETTINGS = "android.settings.DEVICE_INFO_SETTINGS";
     field public static final java.lang.String ACTION_DISPLAY_SETTINGS = "android.settings.DISPLAY_SETTINGS";
     field public static final java.lang.String ACTION_DREAM_SETTINGS = "android.settings.DREAM_SETTINGS";
diff --git a/api/system-current.txt b/api/system-current.txt
index 1cd1be9..cf3057c 100644
--- a/api/system-current.txt
+++ b/api/system-current.txt
@@ -32134,6 +32134,7 @@
     method public boolean isObbMounted(java.lang.String);
     method public boolean mountObb(java.lang.String, java.lang.String, android.os.storage.OnObbStateChangeListener);
     method public boolean unmountObb(java.lang.String, boolean, android.os.storage.OnObbStateChangeListener);
+    field public static final java.lang.String ACTION_MANAGE_STORAGE = "android.os.storage.action.MANAGE_STORAGE";
   }
 
   public final class StorageVolume implements android.os.Parcelable {
@@ -35090,7 +35091,6 @@
     field public static final java.lang.String ACTION_CAST_SETTINGS = "android.settings.CAST_SETTINGS";
     field public static final java.lang.String ACTION_DATA_ROAMING_SETTINGS = "android.settings.DATA_ROAMING_SETTINGS";
     field public static final java.lang.String ACTION_DATE_SETTINGS = "android.settings.DATE_SETTINGS";
-    field public static final java.lang.String ACTION_DELETION_HELPER_SETTINGS = "android.settings.DELETION_HELPER_SETTINGS";
     field public static final java.lang.String ACTION_DEVICE_INFO_SETTINGS = "android.settings.DEVICE_INFO_SETTINGS";
     field public static final java.lang.String ACTION_DISPLAY_SETTINGS = "android.settings.DISPLAY_SETTINGS";
     field public static final java.lang.String ACTION_DREAM_SETTINGS = "android.settings.DREAM_SETTINGS";
diff --git a/api/test-current.txt b/api/test-current.txt
index 648fe84..47260ac 100644
--- a/api/test-current.txt
+++ b/api/test-current.txt
@@ -29671,6 +29671,7 @@
     method public boolean isObbMounted(java.lang.String);
     method public boolean mountObb(java.lang.String, java.lang.String, android.os.storage.OnObbStateChangeListener);
     method public boolean unmountObb(java.lang.String, boolean, android.os.storage.OnObbStateChangeListener);
+    field public static final java.lang.String ACTION_MANAGE_STORAGE = "android.os.storage.action.MANAGE_STORAGE";
   }
 
   public final class StorageVolume implements android.os.Parcelable {
@@ -32459,7 +32460,6 @@
     field public static final java.lang.String ACTION_CAST_SETTINGS = "android.settings.CAST_SETTINGS";
     field public static final java.lang.String ACTION_DATA_ROAMING_SETTINGS = "android.settings.DATA_ROAMING_SETTINGS";
     field public static final java.lang.String ACTION_DATE_SETTINGS = "android.settings.DATE_SETTINGS";
-    field public static final java.lang.String ACTION_DELETION_HELPER_SETTINGS = "android.settings.DELETION_HELPER_SETTINGS";
     field public static final java.lang.String ACTION_DEVICE_INFO_SETTINGS = "android.settings.DEVICE_INFO_SETTINGS";
     field public static final java.lang.String ACTION_DISPLAY_SETTINGS = "android.settings.DISPLAY_SETTINGS";
     field public static final java.lang.String ACTION_DREAM_SETTINGS = "android.settings.DREAM_SETTINGS";
diff --git a/core/java/android/os/storage/StorageManager.java b/core/java/android/os/storage/StorageManager.java
index 968996f..5254d35 100644
--- a/core/java/android/os/storage/StorageManager.java
+++ b/core/java/android/os/storage/StorageManager.java
@@ -20,6 +20,7 @@
 
 import android.annotation.NonNull;
 import android.annotation.Nullable;
+import android.annotation.SdkConstant;
 import android.app.ActivityThread;
 import android.content.ContentResolver;
 import android.content.Context;
@@ -95,6 +96,19 @@
     /** {@hide} */
     public static final String UUID_PRIMARY_PHYSICAL = "primary_physical";
 
+
+    /**
+     * Activity Action: Allows the user to manage their storage. This activity provides the ability
+     * to free up space on the device by deleting data such as apps.
+     * <p>
+     * Input: Nothing.
+     * <p>
+     * Output: Nothing.
+     */
+    @SdkConstant(SdkConstant.SdkConstantType.ACTIVITY_INTENT_ACTION)
+    public static final String ACTION_MANAGE_STORAGE
+            = "android.os.storage.action.MANAGE_STORAGE";
+
     /** {@hide} */
     public static final int DEBUG_FORCE_ADOPTABLE = 1 << 0;
     /** {@hide} */
diff --git a/core/java/android/provider/Settings.java b/core/java/android/provider/Settings.java
index ca45e62..d08baf2 100755
--- a/core/java/android/provider/Settings.java
+++ b/core/java/android/provider/Settings.java
@@ -1277,17 +1277,6 @@
     @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION)
     public static final String ACTION_WEBVIEW_SETTINGS = "android.settings.WEBVIEW_SETTINGS";
 
-    /**
-     * Activity Action: Show the Deletion Helper settings.
-     * <p>
-     * Input: Nothing.
-     * <p>
-     * Output: Nothing.
-     */
-    @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION)
-    public static final String ACTION_DELETION_HELPER_SETTINGS
-            = "android.settings.DELETION_HELPER_SETTINGS";
-
     // End of Intent actions for Settings
 
     /**
diff --git a/services/core/java/com/android/server/storage/DeviceStorageMonitorService.java b/services/core/java/com/android/server/storage/DeviceStorageMonitorService.java
index cbbcb0e..0ae1717 100644
--- a/services/core/java/com/android/server/storage/DeviceStorageMonitorService.java
+++ b/services/core/java/com/android/server/storage/DeviceStorageMonitorService.java
@@ -455,9 +455,7 @@
         //log the event to event log with the amount of free storage(in bytes) left on the device
         EventLog.writeEvent(EventLogTags.LOW_STORAGE, mFreeMem);
         //  Pack up the values and broadcast them to everyone
-        Intent lowMemIntent = new Intent(Environment.isExternalStorageEmulated()
-                ? Settings.ACTION_INTERNAL_STORAGE_SETTINGS
-                : Intent.ACTION_MANAGE_PACKAGE_STORAGE);
+        Intent lowMemIntent = new Intent(StorageManager.ACTION_MANAGE_STORAGE);
         lowMemIntent.putExtra("memory", mFreeMem);
         lowMemIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
         NotificationManager mNotificationMgr =