Notify GCMAppHandlers when the store is reset, so they clear cached IDs

components/invalidation/impl/gcm_invalidation_bridge.h

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef COMPONENTS_INVALIDATION_IMPL_GCM_INVALIDATION_BRIDGE_H_
 #define COMPONENTS_INVALIDATION_IMPL_GCM_INVALIDATION_BRIDGE_H_
 
 #include <memory>
 
 #include "base/callback.h"
@@ skipping 37 matching lines @@
 
   // OAuth2TokenService::Consumer implementation.
   void OnGetTokenSuccess(const OAuth2TokenService::Request* request,
                          const std::string& access_token,
                          const base::Time& expiration_time) override;
   void OnGetTokenFailure(const OAuth2TokenService::Request* request,
                          const GoogleServiceAuthError& error) override;
 
   // gcm::GCMAppHandler implementation.
   void ShutdownHandler() override;
+  void OnStoreReset() override;
   void OnMessage(const std::string& app_id,
                  const gcm::IncomingMessage& message) override;
   void OnMessagesDeleted(const std::string& app_id) override;
   void OnSendError(
       const std::string& app_id,
       const gcm::GCMClient::SendErrorDetails& send_error_details) override;
   void OnSendAcknowledged(const std::string& app_id,
                           const std::string& message_id) override;
 
   // gcm::GCMConnectionObserver implementation.
@@ skipping 39 matching lines @@
   bool subscribed_for_incoming_messages_;
 
   base::WeakPtrFactory<GCMInvalidationBridge> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(GCMInvalidationBridge);
 };
 
 }  // namespace invalidation
 
 #endif  // COMPONENTS_INVALIDATION_IMPL_GCM_INVALIDATION_BRIDGE_H_