battery-status: Implement the battery-status API for chromeos.

content/browser/battery_status/battery_status_manager_android.h

+// 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 "base/android/scoped_java_ref.h"
+#include "base/macros.h"
+#include "content/browser/battery_status/battery_status_manager.h"
+
+#ifndef CHROME_BROWSER_BATTERY_STATUS_BATTERY_STATUS_MANAGER_ANDROID_H_
+#define CHROME_BROWSER_BATTERY_STATUS_BATTERY_STATUS_MANAGER_ANDROID_H_
+
+namespace content {
+
+class BatteryStatusManagerAndroid : public BatteryStatusManager {
+ public:
+  explicit BatteryStatusManagerAndroid(
+      const BatteryStatusService::BatteryUpdateCallback& callback);
+  virtual ~BatteryStatusManagerAndroid();
+
+  // Must be called at startup.
+  static bool Register(JNIEnv* env);
+
+  // Called from Java via JNI.
+  void GotBatteryStatus(JNIEnv*,
+                        jobject,
+                        jboolean charging,
+                        jdouble charging_time,
+                        jdouble discharging_time,
+                        jdouble level);
+
+ private:
+  // BatteryStatusManager:
+  virtual bool StartListeningBatteryChange() OVERRIDE;
+  virtual void StopListeningBatteryChange() OVERRIDE;
+
+  BatteryStatusService::BatteryUpdateCallback callback_;
+  // Java provider of battery status info.
+  base::android::ScopedJavaGlobalRef<jobject> j_manager_;
+
+  DISALLOW_COPY_AND_ASSIGN(BatteryStatusManagerAndroid);
+};
+
+}  // namespace content
+
+#endif  // CHROME_BROWSER_BATTERY_STATUS_BATTERY_STATUS_MANAGER_ANDROID_H_