Created multi-process-friendly PowerMonitor interface.

base/power_monitor/power_monitor_android.cc

-// 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/power_monitor/power_monitor.h"
-#include "jni/PowerMonitor_jni.h"
-
-namespace base {
-
-// A helper function which is a friend of PowerMonitor.
-void ProcessPowerEventHelper(PowerMonitor::PowerEvent event) {
-  if (base::PowerMonitor::Get())
-    base::PowerMonitor::Get()->ProcessPowerEvent(event);
-}
-
-namespace android {
-
-// Native implementation of PowerMonitor.java.
-void OnBatteryChargingChanged(JNIEnv* env, jclass clazz) {
-  ProcessPowerEventHelper(PowerMonitor::POWER_STATE_EVENT);
-}
-
-void OnMainActivityResumed(JNIEnv* env, jclass clazz) {
-  ProcessPowerEventHelper(PowerMonitor::RESUME_EVENT);
-}
-
-void OnMainActivitySuspended(JNIEnv* env, jclass clazz) {
-  ProcessPowerEventHelper(PowerMonitor::SUSPEND_EVENT);
-}
-
-}  // namespace android
-
-bool PowerMonitor::IsBatteryPower() {
-  JNIEnv* env = base::android::AttachCurrentThread();
-  return base::android::Java_PowerMonitor_isBatteryPower(env);
-}
-
-bool RegisterPowerMonitor(JNIEnv* env) {
-  return base::android::RegisterNativesImpl(env);
-}
-
-}  // namespace base