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

components/gcm_driver/gcm_account_mapper.cc

 // 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.
 
 #include "components/gcm_driver/gcm_account_mapper.h"
 
 #include <utility>
 
 #include "base/bind.h"
 #include "base/guid.h"
@@ skipping 132 matching lines @@
   }
 }
 
 void GCMAccountMapper::ShutdownHandler() {
   initialized_ = false;
   accounts_.clear();
   registration_id_.clear();
   dispatch_message_callback_.Reset();
 }
 
+void GCMAccountMapper::OnStoreReset() {
+  // TODO(crbug.com/661660): Tell server to remove the mapping. But can't use
+  // upstream GCM send for that since the store got reset.
+  ShutdownHandler();
+}
+
 void GCMAccountMapper::OnMessage(const std::string& app_id,
                                  const IncomingMessage& message) {
   DCHECK_EQ(app_id, kGCMAccountMapperAppId);
   // TODO(fgorski): Report Send to Gaia ID failures using UMA.
 
   if (dispatch_message_callback_.is_null()) {
     DVLOG(1) << "dispatch_message_callback_ missing in GCMAccountMapper";
     return;
   }
 
@@ skipping 221 matching lines @@
   }
 
   return accounts_.end();
 }
 
 void GCMAccountMapper::SetClockForTesting(std::unique_ptr<base::Clock> clock) {
   clock_ = std::move(clock);
 }
 
 }  // namespace gcm