Use base::PowerObserver to check for missed heartbeats

google_apis/gcm/engine/heartbeat_manager_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 "google_apis/gcm/engine/heartbeat_manager.h"
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/message_loop/message_loop.h"
 #include "base/time/time.h"
 #include "base/timer/timer.h"
 #include "google_apis/gcm/protocol/mcs.pb.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace gcm {
 
 namespace {
 
 mcs_proto::HeartbeatConfig BuildHeartbeatConfig(int interval_ms) {
   mcs_proto::HeartbeatConfig config;
   config.set_interval_ms(interval_ms);
   return config;
 }
 
 class TestHeartbeatManager : public HeartbeatManager {
  public:
   TestHeartbeatManager() {}
-  virtual ~TestHeartbeatManager() {}
+  ~TestHeartbeatManager() override {}
 
   // Bypass the heartbeat timer, and send the heartbeat now.
   void TriggerHearbeat();
 
   // Check for a missed heartbeat now.
   void TriggerMissedHeartbeatCheck();
 };
 
 void TestHeartbeatManager::TriggerHearbeat() {
   OnHeartbeatTriggered();
@@ skipping 172 matching lines @@
   EXPECT_EQ(0, heartbeats_sent());
 
   // Do nothing before the period is reached.
   manager()->TriggerMissedHeartbeatCheck();
   EXPECT_EQ(0, heartbeats_sent());
 }
 
 }  // namespace
 
 }  // namespace gcm