Created multi-process-friendly PowerMonitor interface.

content/common/power_monitor_service.cc

+// Copyright 2013 The Chromium Authors. All rights reserved.

[scottmg, 2013/06/22 00:11:24]

it seems like this file should be in content/browser, and the gpu-side (or
eventually, child) parts should live in content/child. is there some reason why
that can't work? (the messages can stay in common).

+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "content/common/power_monitor_service.h"
+
+#include "content/common/power_monitor_messages.h"
+#include "ipc/ipc_sender.h"
+
+namespace content {
+
+PowerMonitorService::PowerMonitorService(IPC::Sender* sender)
+    : sender_(sender) {
+
+}
+
+PowerMonitorService::~PowerMonitorService() {
+}
+
+void PowerMonitorService::OnPowerStateChange(bool on_battery_power) {
+  sender_->Send(new PowerMonitorMsg_PowerStateChange(on_battery_power));
+}
+
+void PowerMonitorService::OnSuspend() {
+  sender_->Send(new PowerMonitorMsg_Suspend());
+}
+
+void PowerMonitorService::OnResume() {
+  sender_->Send(new PowerMonitorMsg_Resume());
+}
+
+}  // namespace content