Add Mojo API for Blink hit testing

third_party/WebKit/public/web/WebNode.h

 /*
  * Copyright (C) 2009 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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
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 #include "public/platform/WebPrivatePtr.h"
 #include "public/platform/WebString.h"
 #include "public/platform/WebVector.h"
 
 namespace blink {
 
 class Node;
 class WebDocument;
 class WebElement;
 class WebElementCollection;
+class WebFrame;
 class WebPluginContainer;
 
 // Provides access to some properties of a DOM node.
 // Note that the class design requires that neither this class nor any of its
 // subclasses have any virtual methods (other than the destructor), so that it
 // is possible to safely static_cast an instance of one class to the appropriate
 // subclass based on the actual type of the wrapped blink::Node. For the same
 // reason, subclasses must not add any additional data members.
 class BLINK_EXPORT WebNode {
  public:
   virtual ~WebNode();
 
   WebNode();
   WebNode(const WebNode&);
   WebNode& operator=(const WebNode&);
 
   void Reset();
   void Assign(const WebNode&);
 
   bool Equals(const WebNode&) const;
   // Required for using WebNodes in std maps.  Note the order used is
   // arbitrary and should not be expected to have any specific meaning.
   bool LessThan(const WebNode&) const;
 
   bool IsNull() const;
 
   WebNode ParentNode() const;
   WebString NodeValue() const;
   WebDocument GetDocument() const;
+  WebFrame* ContentFrame() const;
   WebNode FirstChild() const;
   WebNode LastChild() const;
   WebNode PreviousSibling() const;
   WebNode NextSibling() const;
 
   bool IsLink() const;
   bool IsDocumentNode() const;
   bool IsDocumentTypeNode() const;
   bool IsCommentNode() const;
   bool IsTextNode() const;
@@ skipping 72 matching lines @@
   return !(a == b);
 }
 
 inline bool operator<(const WebNode& a, const WebNode& b) {
   return a.LessThan(b);
 }
 
 }  // namespace blink
 
 #endif