Encrypted File Systems. Recovery changes for framework.

Modifications to allow for new call to recovery to toggle EFS settings.

services/java/com/android/server/FallbackCheckinService.java

@@ -66,6 +66,23 @@ public final class FallbackCheckinService extends ICheckinService.Stub {
         }
     }
 
+    public void masterClearAndToggleEFS(boolean efsEnabled) {
+        if (mContext.checkCallingOrSelfPermission("android.permission.MASTER_CLEAR") !=
+			PackageManager.PERMISSION_GRANTED) {
+            Log.e(TAG, "Permission Denial: can't invoke masterClearAndToggleEFS from "
+				  + "pid=" + Binder.getCallingPid() + ", "
+				  + "uid=" + Binder.getCallingUid());
+            return;
+        }
+
+        // Save the android ID so the new system can get it erased.
+        try {
+            RecoverySystem.rebootAndToggleEFS(efsEnabled);
+        } catch (IOException e) {
+            Log.e(TAG, "Reboot for toggle EFS failed", e);
+        }
+    }
+
     public void getParentalControlState(IParentalControlCallback p, String requestingApp)
             throws android.os.RemoteException {
         ParentalControlState state = new ParentalControlState();