Devtools: Create layout editor experiment

Source/web/InspectorOverlayImpl.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 36 matching lines @@
 namespace blink {
 
 class Color;
 class EmptyChromeClient;
 class LocalFrame;
 class GraphicsContext;
 class JSONValue;
 class Node;
 class Page;
 class WebViewImpl;
+class LayoutEditor;
 
 class InspectorOverlayImpl final : public NoBaseWillBeGarbageCollectedFinalized<InspectorOverlayImpl>, public InspectorOverlay, public WebPageOverlay, public InspectorOverlayHost::Listener {
     WTF_MAKE_FAST_ALLOCATED_WILL_BE_REMOVED(InspectorOverlayImpl);
     WILL_BE_USING_GARBAGE_COLLECTED_MIXIN(InspectorOverlayImpl);
 public:
     // FIXME: remove this once overlay works for non-main frame.
     static PassOwnPtrWillBeRawPtr<InspectorOverlay> createEmpty();
 
     static PassOwnPtrWillBeRawPtr<InspectorOverlayImpl> create(WebViewImpl* webViewImpl)
     {
@@ skipping 52 matching lines @@
     OwnPtr<EmptyChromeClient> m_overlayChromeClient;
     RefPtrWillBeMember<InspectorOverlayHost> m_overlayHost;
     InspectorHighlightConfig m_quadHighlightConfig;
     bool m_drawViewSize;
     bool m_drawViewSizeWithGrid;
     bool m_omitTooltip;
     Timer<InspectorOverlayImpl> m_timer;
     int m_suspendCount;
     bool m_updating;
     RawPtrWillBeMember<InspectorOverlay::Listener> m_listener;
+    OwnPtr<LayoutEditor> m_layoutEditor;
 };
 
 } // namespace blink
 
 
 #endif // InspectorOverlayImpl_h