chromeos: power: Refactor RendererFreezer and add tests

chromeos/dbus/fake_power_manager_client.h

 // Copyright (c) 2013 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.
 
 #ifndef CHROMEOS_DBUS_FAKE_POWER_MANAGER_CLIENT_H_
 #define CHROMEOS_DBUS_FAKE_POWER_MANAGER_CLIENT_H_
 
 #include <string>
 
 #include "base/basictypes.h"
+#include "base/macros.h"
 #include "base/observer_list.h"
 #include "chromeos/dbus/power_manager/policy.pb.h"
 #include "chromeos/dbus/power_manager/suspend.pb.h"
 #include "chromeos/dbus/power_manager_client.h"
 
 namespace chromeos {
 
 // A fake implementation of PowerManagerClient. This remembers the policy passed
 // to SetPolicy() and the user of this class can inspect the last set policy by
 // get_policy().
@@ skipping 39 matching lines @@
   // Emulates the power manager announcing that the system is starting or
   // completing a suspend attempt.
   void SendSuspendImminent();
   void SendSuspendDone();
   void SendDarkSuspendImminent();
 
   // Notifies observers that the power button has been pressed or released.
   void SendPowerButtonEvent(bool down, const base::TimeTicks& timestamp);
 
  private:
+  // Callback that will be run by asynchronous suspend delays to report
+  // readiness.
+  void HandleSuspendReadiness();
+
   ObserverList<Observer> observers_;
 
   // Last policy passed to SetPolicy().
   power_manager::PowerManagementPolicy policy_;
 
   // Number of times that various methods have been called.
   int num_request_restart_calls_;
   int num_request_shutdown_calls_;
   int num_set_policy_calls_;
   int num_set_is_projecting_calls_;
 
+  // Number of pending suspend readiness callbacks.
+  int num_pending_suspend_readiness_callbacks_;
+
   // Last projecting state set in SetIsProjecting().
   bool is_projecting_;
 
   DISALLOW_COPY_AND_ASSIGN(FakePowerManagerClient);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROMEOS_DBUS_FAKE_POWER_MANAGER_CLIENT_H_