Remove Battery Status API support code from Blink

Source/core/testing/Internals.idl

 /*
  * 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 171 matching lines @@
 
     [RaisesException] DOMString repaintRectsAsText(Document document);
 
     [RaisesException] void garbageCollectDocumentResources(Document document);
 
     void allowRoundingHacks();
 
     void insertAuthorCSS(Document document, DOMString css);
     void insertUserCSS(Document document, DOMString css);
 
-#if defined(ENABLE_BATTERY_STATUS) && ENABLE_BATTERY_STATUS
-    [RaisesException] void setBatteryStatus(Document document, DOMString eventType, boolean charging, double chargingTime, double dischargingTime, double level);
-#endif
-
     unsigned long numberOfLiveNodes();
     unsigned long numberOfLiveDocuments();
     sequence<DOMString> consoleMessageArgumentCounts(Document document);
     DOMWindow openDummyInspectorFrontend(DOMString url);
     void closeDummyInspectorFrontend();
     [RaisesException] void setInspectorResourcesDataSizeLimits(long maximumResourcesContentSize, long maximumSingleResourceContentSize);
 
     DOMString counterValue(Element element);
     long pageNumber(Element element, optional float pageWidth, optional float pageHeight);
     DOMString[] shortcutIconURLs(Document document);
@@ skipping 38 matching lines @@
     void forceReload(boolean endToEnd);
 
     [Conditional=ENCRYPTED_MEDIA_V2] void initializeMockCDM();
 
     void enableMockSpeechSynthesizer();
 
     [RaisesException] DOMString getImageSourceURL(Element element);
 
     boolean isSelectPopupVisible(Node node);
 };