[GCM] Make sure GCM checkout logic is invoked when the profile is signed out

google_apis/gcm/engine/mcs_client.h

Index: google_apis/gcm/engine/mcs_client.h
diff --git a/google_apis/gcm/engine/mcs_client.h b/google_apis/gcm/engine/mcs_client.h
index 1834b9561c56d513030de81d3915eb7a86b8ab79..267a8f9d62dc1acb3c73f985718bdcd90f571703 100644
--- a/google_apis/gcm/engine/mcs_client.h
+++ b/google_apis/gcm/engine/mcs_client.h
@@ -121,13 +121,6 @@ class GCM_EXPORT MCSClient {
   // |message_sent_callback_| is invoked with a TTL expiration error.
   virtual void SendMessage(const MCSMessage& message);
 
-  // Disconnects the client and permanently destroys the persistent GCM store.
-  // WARNING: This is permanent, and the client must be recreated with new
-  // credentials afterwards.
-  // TODO(jianli): destroying the persistent GCM store should be moved to
-  // GCMClient.
-  void Destroy();
-
   // Returns the current state of the client.
   State state() const { return state_; }