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

Source/core/inspector/InspectorOverlay.h

 /*
  * Copyright (C) 2011 Google 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.
  * 2.  Redistributions in binary form must reproduce the above copyright
@@ skipping 101 matching lines @@
     {
         return adoptPtr(new InspectorOverlay(page, client));
     }
 
     ~InspectorOverlay();
 
     void update();
     void hide();
     void paint(GraphicsContext&);
     void drawOutline(GraphicsContext*, const LayoutRect&, const Color&);
-    void getHighlight(Highlight*) const;
     void resize(const IntSize&);
     bool handleGestureEvent(const PlatformGestureEvent&);
     bool handleMouseEvent(const PlatformMouseEvent&);
     bool handleTouchEvent(const PlatformTouchEvent&);
     bool handleKeyboardEvent(const PlatformKeyboardEvent&);
 
     void setPausedInDebuggerMessage(const String*);
     void setInspectModeEnabled(bool);
 
     void hideHighlight();
@@ skipping 46 matching lines @@
     bool m_drawViewSizeWithGrid;
     bool m_omitTooltip;
     Timer<InspectorOverlay> m_timer;
     int m_activeProfilerCount;
 };
 
 } // namespace WebCore
 
 
 #endif // InspectorOverlay_h