Introduce permission for updating the cell broadcast content provider.

Change-Id: I64a1001b6aaf7c0032cde01216abb240c54520f7
diff --git a/api/system-current.txt b/api/system-current.txt
index cbb1bb2..6cd3d88 100644
--- a/api/system-current.txt
+++ b/api/system-current.txt
@@ -129,6 +129,7 @@
     field public static final java.lang.String MODIFY_APPWIDGET_BIND_PERMISSIONS = "android.permission.MODIFY_APPWIDGET_BIND_PERMISSIONS";
     field public static final java.lang.String MODIFY_AUDIO_ROUTING = "android.permission.MODIFY_AUDIO_ROUTING";
     field public static final java.lang.String MODIFY_AUDIO_SETTINGS = "android.permission.MODIFY_AUDIO_SETTINGS";
+    field public static final java.lang.String MODIFY_CELL_BROADCASTS = "android.permission.MODIFY_CELL_BROADCASTS";
     field public static final java.lang.String MODIFY_NETWORK_ACCOUNTING = "android.permission.MODIFY_NETWORK_ACCOUNTING";
     field public static final java.lang.String MODIFY_PARENTAL_CONTROLS = "android.permission.MODIFY_PARENTAL_CONTROLS";
     field public static final java.lang.String MODIFY_PHONE_STATE = "android.permission.MODIFY_PHONE_STATE";
diff --git a/core/res/AndroidManifest.xml b/core/res/AndroidManifest.xml
index 062ae27..c788b96 100644
--- a/core/res/AndroidManifest.xml
+++ b/core/res/AndroidManifest.xml
@@ -824,6 +824,11 @@
     <permission android:name="android.permission.BIND_DIRECTORY_SEARCH"
         android:protectionLevel="signature|privileged" />
 
+    <!-- @SystemApi @hide Allows an application to modify cell broadcasts through the content provider.
+         <p>Not for use by third-party applications. -->
+    <permission android:name="android.permission.MODIFY_CELL_BROADCASTS"
+                android:protectionLevel="signature|system" />
+
     <!-- =============================================================== -->
     <!-- Permissions for setting the device alarm                        -->
     <!-- =============================================================== -->