Remove Battery Status API support code from Blink

Source/core/testing/Internals.h

 /*
  * Copyright (C) 2012 Google Inc. All rights reserved.
  * Copyright (C) 2013 Apple Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
@@ skipping 181 matching lines @@
     unsigned numberOfScrollableAreas(Document*, ExceptionCode&);
 
     bool isPageBoxVisible(Document*, int pageNumber, ExceptionCode&);
 
     static const char* internalsId;
 
     InternalSettings* settings() const;
     InternalRuntimeFlags* runtimeFlags() const;
     unsigned workerThreadCount() const;
 
-    void setBatteryStatus(Document*, const String& eventType, bool charging, double chargingTime, double dischargingTime, double level, ExceptionCode&);
-
     void setDeviceProximity(Document*, const String& eventType, double value, double min, double max, ExceptionCode&);
 
     enum {
         // Values need to be kept in sync with Internals.idl.
         LAYER_TREE_INCLUDES_VISIBLE_RECTS = 1,
         LAYER_TREE_INCLUDES_TILE_CACHES = 2,
         LAYER_TREE_INCLUDES_REPAINT_RECTS = 4,
         LAYER_TREE_INCLUDES_PAINTING_PHASES = 8
     };
     String layerTreeAsText(Document*, unsigned flags, ExceptionCode&) const;
@@ skipping 89 matching lines @@
 
     DocumentMarker* markerAt(Node*, const String& markerType, unsigned index, ExceptionCode&);
     RefPtr<DOMWindow> m_frontendWindow;
     OwnPtr<InspectorFrontendChannelDummy> m_frontendChannel;
     RefPtr<InternalRuntimeFlags> m_runtimeFlags;
 };
 
 } // namespace WebCore
 
 #endif