Implement basic parts of hit regions on canvas2d.

Source/bindings/v8/Dictionary.h

 /*
  * Copyright (C) 2010 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 27 matching lines @@
 #include "wtf/HashMap.h"
 #include "wtf/HashSet.h"
 #include "wtf/Vector.h"
 #include "wtf/text/AtomicString.h"
 #include "wtf/text/WTFString.h"
 
 namespace WebCore {
 
 class ArrayValue;
 class DOMError;
+class Element;
 class LocalDOMWindow;
 class Gamepad;
 class MediaStream;
 class HeaderMap;
 class IDBKeyRange;
 class MIDIPort;
 class MediaKeyError;
 class Notification;
 class SpeechRecognitionResult;
 class SpeechRecognitionResultList;
@@ skipping 111 matching lines @@
     template<template <typename> class PointerType, typename T>
     bool convert(ConversionContext&, const String&, PointerType<T>&) const;
 
     template<typename StringType>
     bool getStringType(const String&, StringType&) const;
 
     bool getOwnPropertiesAsStringHashMap(HashMap<String, String>&) const;
     bool getOwnPropertyNames(Vector<String>&) const;
 
     bool getWithUndefinedOrNullCheck(const String&, String&) const;
+    bool getWithUndefinedOrNullCheck(const String&, RefPtrWillBeMember<Element>&) const;
 
     bool hasProperty(const String&) const;
 
 private:
     bool getKey(const String& key, v8::Local<v8::Value>&) const;
 
     v8::Handle<v8::Value> m_options;
     v8::Isolate* m_isolate;
 };
 
@@ skipping 151 matching lines @@
     if (context.isNullable() && WebCore::isUndefinedOrNull(v8Value))
         return true;
 
     context.throwTypeError(ExceptionMessages::incorrectPropertyType(key, "does not have a " + context.typeName() + " type."));
     return false;
 }
 
 }
 
 #endif // Dictionary_h