Implement Custom Elements inserted and removed callbacks.

Source/bindings/v8/V8CustomElementCallback.h

 /*
  * Copyright (C) 2013 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
@@ skipping 26 matching lines @@
 #include "core/dom/CustomElementCallback.h"
 #include <v8.h>
 
 namespace WebCore {
 
 class Element;
 class ScriptExecutionContext;
 
 class V8CustomElementCallback : public CustomElementCallback, ActiveDOMCallback {
 public:
-    static PassRefPtr<V8CustomElementCallback> create(ScriptExecutionContext*, v8::Handle<v8::Object> owner, v8::Handle<v8::Function> ready);
+    static PassRefPtr<V8CustomElementCallback> create(ScriptExecutionContext*, v8::Handle<v8::Object> owner, v8::Handle<v8::Function> ready, v8::Handle<v8::Function> inserted, v8::Handle<v8::Function> removed);
 
     virtual ~V8CustomElementCallback() { }
 
 private:
-    V8CustomElementCallback(ScriptExecutionContext*, v8::Handle<v8::Function> ready);
+    V8CustomElementCallback(ScriptExecutionContext*, v8::Handle<v8::Function> ready, v8::Handle<v8::Function> inserted, v8::Handle<v8::Function> removed);
 
     virtual void ready(Element*) OVERRIDE;
+    virtual void inserted(Element*) OVERRIDE;
+    virtual void removed(Element*) OVERRIDE;
+    void invoke(const ScopedPersistent<v8::Function>& callback, Element*);
 
     RefPtr<DOMWrapperWorld> m_world;
     ScopedPersistent<v8::Function> m_ready;
+    ScopedPersistent<v8::Function> m_inserted;
+    ScopedPersistent<v8::Function> m_removed;
 };
 
 }
 
 #endif // CustomElementCallback_h