Created multi-process-friendly PowerMonitor interface.

base/power_monitor/power_monitor_test_base.h

+// Copyright 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.
+
+#include "base/message_loop/message_loop.h"
+#include "base/power_monitor/power_monitor.h"
+#include "base/power_monitor/power_monitor_source.h"
+
+namespace base {
+
+class BASE_EXPORT PowerMonitorTestSource : public PowerMonitorSource {
+ public:
+  PowerMonitorTestSource();
+  virtual ~PowerMonitorTestSource();
+
+  void GeneratePowerStateEvent(bool on_battery_power);
+  void GenerateSuspendEvent();
+  void GenerateResumeEvent();
+
+ protected:
+  virtual bool IsOnBatteryPowerImpl() OVERRIDE;
+
+  bool test_on_battery_power_;
+  MessageLoop message_loop_;
+};
+
+class BASE_EXPORT PowerMonitorTestObserver : public PowerObserver {
+ public:
+  PowerMonitorTestObserver();
+  virtual ~PowerMonitorTestObserver();
+
+  // PowerObserver callbacks.
+  virtual void OnPowerStateChange(bool on_battery_power) OVERRIDE;
+  virtual void OnSuspend() OVERRIDE;
+  virtual void OnResume() OVERRIDE;
+
+  // Test status counts.
+  bool last_power_state() { return last_power_state_; }
+  int power_state_changes() { return power_state_changes_; }
+  int suspends() { return suspends_; }
+  int resumes() { return resumes_; }
+
+ private:
+  bool last_power_state_; // Last power state we were notified of.
+  int power_state_changes_;  // Count of OnPowerStateChange notifications.
+  int suspends_;  // Count of OnSuspend notifications.
+  int resumes_;  // Count of OnResume notifications.
+};
+
+}  // namespace base