[GCM] Add app handler support for connection events

components/gcm_driver/fake_gcm_driver.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_driver.h"
 
 namespace gcm {
 
 FakeGCMDriver::FakeGCMDriver() {
 }
@@ skipping 22 matching lines @@
 }
 
 bool FakeGCMDriver::IsStarted() const {
   return true;
 }
 
 bool FakeGCMDriver::IsGCMClientReady() const {
   return true;
 }
 
+bool FakeGCMDriver::IsConnected() const {
+  return true;
+}
+
 void FakeGCMDriver::GetGCMStatistics(const GetGCMStatisticsCallback& callback,
                                      bool clear_logs) {
 }
 
 void FakeGCMDriver::SetGCMRecording(const GetGCMStatisticsCallback& callback,
                                     bool recording) {
 }
 
 std::string FakeGCMDriver::SignedInUserName() const {
   return std::string();
 }
 
 GCMClient::Result FakeGCMDriver::EnsureStarted() {
   return GCMClient::SUCCESS;
 }
 
 void FakeGCMDriver::RegisterImpl(const std::string& app_id,
                                  const std::vector<std::string>& sender_ids) {
 }
 
 void FakeGCMDriver::UnregisterImpl(const std::string& app_id) {
 }
 
 void FakeGCMDriver::SendImpl(const std::string& app_id,
                              const std::string& receiver_id,
                              const GCMClient::OutgoingMessage& message) {
 }
 
 }  // namespace gcm