[GCM] Exposing persistence of account mappings in GCM Driver

components/gcm_driver/fake_gcm_client.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/fake_gcm_client.h"
 
 #include "base/bind.h"
 #include "base/logging.h"
 #include "base/message_loop/message_loop.h"
 #include "base/sequenced_task_runner.h"
@@ skipping 101 matching lines @@
 }
 
 GCMClient::GCMStatistics FakeGCMClient::GetStatistics() const {
   return GCMClient::GCMStatistics();
 }
 
 void FakeGCMClient::SetAccountsForCheckin(
     const std::map<std::string, std::string>& account_tokens) {
 }
 
+void FakeGCMClient::UpdateAccountMapping(
+    const AccountMapping& account_mapping) {
+}
+
+void FakeGCMClient::RemoveAccountMapping(const std::string& account_id) {
+}
+
 void FakeGCMClient::PerformDelayedLoading() {
   DCHECK(ui_thread_->RunsTasksOnCurrentThread());
 
   io_thread_->PostTask(
       FROM_HERE,
       base::Bind(&FakeGCMClient::DoLoading, weak_ptr_factory_.GetWeakPtr()));
 }
 
 void FakeGCMClient::ReceiveMessage(const std::string& app_id,
                                    const IncomingMessage& message) {
@@ skipping 101 matching lines @@
     delegate_->OnMessageSendError(app_id, send_error_details);
 }
 
 void FakeGCMClient::SendAcknowledgement(const std::string& app_id,
                                         const std::string& message_id) {
   if (delegate_)
     delegate_->OnSendAcknowledged(app_id, message_id);
 }
 
 }  // namespace gcm