Add a DOM.getLayoutTreeNodes devtools command

third_party/WebKit/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 91 matching lines @@
 
     void restore() override;
 
     HeapVector<Member<Document>> documents();
     void reset();
 
     // Methods called from the frontend for DOM nodes inspection.
     void enable(ErrorString*) override;
     void disable(ErrorString*) override;
     void getDocument(ErrorString*, std::unique_ptr<protocol::DOM::Node>* root) override;
+    void getLayoutTreeNodes(ErrorString*, std::unique_ptr<protocol::Array<protocol::DOM::LayoutTreeNode>>* layoutTreeNodes) override;
     void collectClassNamesFromSubtree(ErrorString*, int nodeId, std::unique_ptr<protocol::Array<String>>* classNames) override;
     void requestChildNodes(ErrorString*, int nodeId, const Maybe<int>& depth) override;
     void querySelector(ErrorString*, int nodeId, const String& selector, int* outNodeId) override;
     void querySelectorAll(ErrorString*, int nodeId, const String& selector, std::unique_ptr<protocol::Array<int>>* nodeIds) override;
     void setNodeName(ErrorString*, int nodeId, const String& name, int* outNodeId) override;
     void setNodeValue(ErrorString*, int nodeId, const String& value) override;
     void removeNode(ErrorString*, int nodeId) override;
     void setAttributeValue(ErrorString*, int nodeId, const String& name, const String& value) override;
     void setAttributesAsText(ErrorString*, int nodeId, const String& text, const Maybe<String>& name) override;
     void removeAttribute(ErrorString*, int nodeId, const String& name) override;
@@ skipping 106 matching lines @@
     Node* nodeForRemoteId(ErrorString*, const String& id);
 
     void discardFrontendBindings();
 
     void innerHighlightQuad(std::unique_ptr<FloatQuad>, const Maybe<protocol::DOM::RGBA>& color, const Maybe<protocol::DOM::RGBA>& outlineColor);
 
     bool pushDocumentUponHandlelessOperation(ErrorString*);
 
     Member<InspectorRevalidateDOMTask> revalidateTask();
 
+    void visitLayoutTreeNodes(Node*, protocol::Array<protocol::DOM::LayoutTreeNode>&);
+
     v8::Isolate* m_isolate;
     Member<InspectedFrames> m_inspectedFrames;
     v8_inspector::V8InspectorSession* m_v8Session;
     Client* m_client;
     Member<DOMListener> m_domListener;
     Member<NodeToIdMap> m_documentNodeToIdMap;
     // Owns node mappings for dangling nodes.
     HeapVector<Member<NodeToIdMap>> m_danglingNodeToIdMaps;
     HeapHashMap<int, Member<Node>> m_idToNode;
     HeapHashMap<int, Member<NodeToIdMap>> m_idToNodesMap;
     HashSet<int> m_childrenRequested;
     HashSet<int> m_distributedNodesRequested;
     HashMap<int, int> m_cachedChildCount;
     int m_lastNodeId;
     Member<Document> m_document;
     typedef HeapHashMap<String, HeapVector<Member<Node>>> SearchResults;
     SearchResults m_searchResults;
     Member<InspectorRevalidateDOMTask> m_revalidateTask;
     Member<InspectorHistory> m_history;
     Member<DOMEditor> m_domEditor;
     bool m_suppressAttributeModifiedEvent;
     int m_backendNodeIdToInspect;
 };
 
 
 } // namespace blink
 
 #endif // !defined(InspectorDOMAgent_h)