Remove Battery Status API support code from Blink

Source/modules/battery/BatteryController.h

Index: Source/modules/battery/BatteryController.h
diff --git a/Source/modules/battery/BatteryController.h b/Source/modules/battery/BatteryController.h
deleted file mode 100644
index d2c437e5351411f1fc588a31d66231807d7aa7b2..0000000000000000000000000000000000000000
--- a/Source/modules/battery/BatteryController.h
+++ /dev/null
@@ -1,65 +0,0 @@
-/*
- *  Copyright (C) 2012 Samsung Electronics
- *  Copyright (C) 2012 Google Inc.
- *
- *  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.
- */
-
-#ifndef BatteryController_h
-#define BatteryController_h
-
-#if ENABLE(BATTERY_STATUS)
-
-#include "core/page/Page.h"
-#include "modules/battery/BatteryManager.h"
-
-namespace WebCore {
-
-class BatteryClient;
-
-class BatteryController : public Supplement<Page> {
-public:
-    ~BatteryController();
-
-    static PassOwnPtr<BatteryController> create(BatteryClient*);
-
-    void addListener(BatteryManager*);
-    void removeListener(BatteryManager*);
-    void updateBatteryStatus(PassRefPtr<BatteryStatus>);
-    void didChangeBatteryStatus(const AtomicString& eventType, PassRefPtr<BatteryStatus>);
-
-    BatteryClient* client() const { return m_client; }
-
-    static const char* supplementName();
-    static BatteryController* from(Page* page) { return static_cast<BatteryController*>(Supplement<Page>::from(page, supplementName())); }
-    static bool isActive(Page*);
-
-private:
-    typedef Vector<BatteryManager*> ListenerVector;
-
-    explicit BatteryController(BatteryClient*);
-
-    BatteryClient* m_client;
-    ListenerVector m_listeners;
-
-    RefPtr<BatteryStatus> m_batteryStatus;
-};
-
-}
-
-#endif // BATTERY_STATUS
-#endif // BatteryController_h
-