DevTools: do not use internals for highlight testing, use protocol instead.

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 78 matching lines @@
     [RaisesException] void setFormControlStateOfHistoryItem(sequence<DOMString> values);
     [RaisesException] void setEnableMockPagePopup(boolean enabled);
     readonly attribute PagePopupController pagePopupController;
 
     [RaisesException] ClientRect unscaledViewportRect();
 
     [RaisesException] ClientRect absoluteCaretBounds();
 
     [RaisesException] ClientRect boundingBox(Element element);
 
-    [RaisesException] ClientRectList inspectorHighlightRects(Document document);
-
     [RaisesException] unsigned long markerCountForNode(Node node, DOMString markerType);
     [RaisesException] unsigned long activeMarkerCountForNode(Node node);
     [RaisesException] Range markerRangeForNode(Node node, DOMString markerType, unsigned long index);
     [RaisesException] DOMString markerDescriptionForNode(Node node, DOMString markerType, unsigned long index);
     void addTextMatchMarker(Range range, boolean isActive);
     [RaisesException] void setMarkersActive(Node node, unsigned long startOffset, unsigned long endOffset, boolean active);
     [RaisesException] void setMarkedTextMatchesAreHighlighted(Document document, boolean highlight);
 
     [RaisesException] void setScrollViewPosition(Document document, long x, long y);
 
@@ skipping 166 matching lines @@
     [CallWith=ExecutionContext] Promise createPromise();
     [CallWith=ExecutionContext] Promise createResolvedPromise(any value);
     [CallWith=ExecutionContext] Promise createRejectedPromise(any reason);
     [CallWith=ExecutionContext] Promise addOneToPromise(Promise promise);
 
     void startSpeechInput(Element element);
     void setValueForUser(Element element, DOMString value);
 
     DOMString textSurroundingNode(Node node, long x, long y, unsigned long maxLength);
 };