Add support to Battery Status API in blink.

Source/modules/battery/NavigatorBattery.cpp

+/*
+ *  Copyright (C) 2012 Samsung Electronics
+ *  Copyright (C) 2014 Intel Corporation
+ *
+ *  This library is free software; you can redistribute it and/or
+ *  modify it under the terms of the GNU Library General Public
+ *  License as published by the Free Software Foundation; either
+ *  version 2 of the License, or (at your option) any later version.
+ *
+ *  This library is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ *  Library General Public License for more details.
+ *
+ *  You should have received a copy of the GNU Library General Public License
+ *  along with this library; see the file COPYING.LIB.  If not, write to
+ *  the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ *  Boston, MA 02110-1301, USA.
+ */
+
+#include "config.h"
+#include "modules/battery/NavigatorBattery.h"
+
+#include "core/dom/ExecutionContext.h"
+#include "core/frame/Navigator.h"
+#include "modules/battery/BatteryManager.h"
+
+namespace WebCore {
+
+NavigatorBattery::NavigatorBattery(Frame *frame)

[abarth-chromium, 2014/02/27 05:42:09]

"Frame *"  ->  "Frame*"

+    : DOMWindowProperty(frame)
+{
+}
+
+NavigatorBattery::~NavigatorBattery()
+{
+}
+
+BatteryManager* NavigatorBattery::battery(Navigator& navigator)
+{
+    return NavigatorBattery::from(navigator).battery();
+}
+
+BatteryManager* NavigatorBattery::battery()
+{
+    if (!m_batteryManager && frame())
+        m_batteryManager = BatteryManager::create(frame());
+    return m_batteryManager.get();
+}
+
+const char* NavigatorBattery::supplementName()
+{
+    return "NavigatorBattery";
+}
+
+NavigatorBattery& NavigatorBattery::from(Navigator& navigator)
+{
+    NavigatorBattery* supplement = static_cast<NavigatorBattery*>(Supplement<Navigator>::from(navigator, supplementName()));
+    if (!supplement) {
+        supplement = new NavigatorBattery(navigator.frame());
+        provideTo(navigator, supplementName(), adoptPtr(supplement));
+    }
+    return *supplement;
+}
+
+BatteryManager* NavigatorBattery::batteryManager()
+{
+    return m_batteryManager.get();
+}
+
+} // namespace WebCore
+