DevTools: add "Jump to Relayout Boundary" context menu item in Elements panel

Source/core/inspector/InspectorDOMAgent.h

 /*
  * Copyright (C) 2009 Apple Inc. All rights reserved.
  * 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.
@@ skipping 132 matching lines @@
     virtual void highlightFrame(ErrorString*, const String& frameId, const RefPtr<JSONObject>* color, const RefPtr<JSONObject>* outlineColor);
 
     virtual void moveTo(ErrorString*, int nodeId, int targetNodeId, const int* anchorNodeId, int* newNodeId);
     virtual void undo(ErrorString*);
     virtual void redo(ErrorString*);
     virtual void markUndoableState(ErrorString*);
     virtual void focus(ErrorString*, int nodeId);
     virtual void setFileInputFiles(ErrorString*, int nodeId, const RefPtr<JSONArray>& files);
     virtual void getBoxModel(ErrorString*, int nodeId, RefPtr<TypeBuilder::DOM::BoxModel>&);
     virtual void getNodeForLocation(ErrorString*, int x, int y, int* nodeId);
+    virtual void getRelayoutBoundary(ErrorString*, int nodeId, int* relayoutBoundaryNodeId);
 
     static void getEventListeners(Node*, Vector<EventListenerInfo>& listenersArray, bool includeAncestors);
 
     // Methods called from the InspectorInstrumentation.
     void setDocument(Document*);
     void releaseDanglingNodes();
 
     void domContentLoadedEventFired(Frame*);
     void loadEventFired(Frame*);
     void didCommitLoad(Frame*, DocumentLoader*);
@@ skipping 107 matching lines @@
     OwnPtr<HighlightConfig> m_inspectModeHighlightConfig;
     OwnPtr<InspectorHistory> m_history;
     OwnPtr<DOMEditor> m_domEditor;
     bool m_suppressAttributeModifiedEvent;
 };
 
 
 } // namespace WebCore
 
 #endif // !defined(InspectorDOMAgent_h)