Implement Custom Elements inserted and removed callbacks.

Source/core/dom/CustomElementCallback.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 19 matching lines @@
 
 #ifndef CustomElementCallback_h
 #define CustomElementCallback_h
 
 #include "wtf/RefCounted.h"
 
 namespace WebCore {
 
 class Element;
 
 class CustomElementCallback : public RefCounted<CustomElementCallback> {

[dglazkov, 2013/06/25 18:04:31]

I wonder if these should be named CustomElementLifecycleCallbacks or something
to match the spec. I like how you put them all into one class.

 public:
     virtual ~CustomElementCallback() { }
 
-    bool hasReady() const { return m_which == Ready; }
+    bool hasReady() const { return m_which & Ready; }
     virtual void ready(Element*) = 0;
 
-protected:
+    bool hasInserted() const { return m_which & Inserted; }
+    virtual void inserted(Element*) = 0;
+
+    bool hasRemoved() const { return m_which & Removed; }
+    virtual void removed(Element*) = 0;
+
     enum CallbackType {
-        None,
-        Ready
+        None     = 0,
+        Ready    = 1 << 0,
+        Inserted = 1 << 1,
+        Removed  = 1 << 2
     };
 
+protected:
     CustomElementCallback(CallbackType which) : m_which(which) { }
 
 private:
     CallbackType m_which;
 };
 
 }
 
 #endif // CustomElementCallback_h