Teach the GCM Driver how to decrypt incoming messages.

components/gcm_driver/gcm_driver_android.cc

Index: components/gcm_driver/gcm_driver_android.cc
diff --git a/components/gcm_driver/gcm_driver_android.cc b/components/gcm_driver/gcm_driver_android.cc
index f88bdd597f9f47d95b889bcc8c42a5da36545fb9..1235ac7c0efe61e7e3da58af96ed74e91264b493 100644
--- a/components/gcm_driver/gcm_driver_android.cc
+++ b/components/gcm_driver/gcm_driver_android.cc
@@ -88,7 +88,7 @@ void GCMDriverAndroid::OnMessageReceived(JNIEnv* env,
     message.raw_data.assign(raw_data.begin(), raw_data.end());
   }
 
-  GetAppHandler(app_id)->OnMessage(app_id, message);
+  DispatchMessage(app_id, message);
 }
 
 void GCMDriverAndroid::OnMessagesDeleted(JNIEnv* env,