[GCM] Persistence of account mappings.

google_apis/gcm/engine/gcm_store.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 "google_apis/gcm/engine/gcm_store.h"
 
 namespace gcm {
 
 GCMStore::LoadResult::LoadResult()
     : success(false),
       device_android_id(0),
       device_security_token(0) {
 }
 
 GCMStore::LoadResult::~LoadResult() {}
 
+void GCMStore::LoadResult::Reset() {
+  device_android_id = 0;
+  device_security_token = 0;
+  registrations.clear();
+  incoming_messages.clear();
+  outgoing_messages.clear();
+  gservices_settings.clear();
+  gservices_digest.clear();
+  last_checkin_time = base::Time::FromInternalValue(0LL);
+  last_checkin_accounts.clear();
+  account_infos.clear();
+  success = false;
+}
+
 GCMStore::GCMStore() {}
 
 GCMStore::~GCMStore() {}
 
 }  // namespace gcm