components: Introduce AlarmTimer class and use it for GCM heartbeat

components/gcm_driver/gcm_client_impl_unittest.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_client_impl.h"
 
 #include "base/command_line.h"
 #include "base/files/scoped_temp_dir.h"
+#include "base/memory/scoped_ptr.h"
 #include "base/message_loop/message_loop.h"
 #include "base/run_loop.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/time/clock.h"
+#include "base/timer/timer.h"
 #include "google_apis/gcm/base/fake_encryptor.h"
 #include "google_apis/gcm/base/mcs_message.h"
 #include "google_apis/gcm/base/mcs_util.h"
 #include "google_apis/gcm/engine/fake_connection_factory.h"
 #include "google_apis/gcm/engine/fake_connection_handler.h"
 #include "google_apis/gcm/engine/gservices_settings.h"
 #include "google_apis/gcm/monitoring/gcm_stats_recorder.h"
 #include "google_apis/gcm/protocol/android_checkin.pb.h"
 #include "google_apis/gcm/protocol/checkin.pb.h"
 #include "google_apis/gcm/protocol/mcs.pb.h"
@@ skipping 84 matching lines @@
   uint64 last_android_id_;
   uint64 last_security_token_;
   uint8 last_message_tag_;
   mcs_proto::DataMessageStanza last_data_message_stanza_;
 };
 
 FakeMCSClient::FakeMCSClient(base::Clock* clock,
                              ConnectionFactory* connection_factory,
                              GCMStore* gcm_store,
                              GCMStatsRecorder* recorder)
-    : MCSClient("", clock, connection_factory, gcm_store, recorder),
+    : MCSClient("", clock, connection_factory, gcm_store, recorder,
+                make_scoped_ptr(new base::Timer(true, false))),
       last_android_id_(0u),
       last_security_token_(0u),
       last_message_tag_(kNumProtoTypes) {
 }
 
 FakeMCSClient::~FakeMCSClient() {
 }
 
 void FakeMCSClient::Login(uint64 android_id, uint64 security_token) {
   last_android_id_ = android_id;
@@ skipping 910 matching lines @@
 TEST_F(GCMClientImplStartAndStopTest, StartStopAndRestartImmediately) {
   // Start the GCM and then stop and restart it immediately.
   gcm_client()->Start();
   gcm_client()->Stop();
   gcm_client()->Start();
 
   PumpLoopUntilIdle();
 }
 
 }  // namespace gcm