Revert "Revert "Dartium changes for custom element lifecycle events.""

Source/bindings/v8/CustomElementConstructorBuilder.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 43 matching lines @@
 class WrapperTypeInfo;
 
 // Handles the scripting-specific parts of the Custom Elements element
 // registration algorithm and constructor generation algorithm. It is
 // used in the implementation of those algorithms in
 // Document::registerElement.
 class CustomElementConstructorBuilder {
     WTF_MAKE_NONCOPYABLE(CustomElementConstructorBuilder);
 public:
     CustomElementConstructorBuilder(ScriptState*, const Dictionary* options);
+    virtual ~CustomElementConstructorBuilder() { }
 
     // The builder accumulates state and may run script at specific
     // points. These methods must be called in order. When one fails
     // (returns false), the calls must stop.
 
-    bool isFeatureAllowed() const;
-    bool validateOptions(const AtomicString& type, ExceptionState&);
-    bool findTagName(const AtomicString& customElementType, QualifiedName& tagName);
-    PassRefPtr<CustomElementLifecycleCallbacks> createCallbacks();
-    bool createConstructor(Document*, CustomElementDefinition*, ExceptionState&);
-    bool didRegisterDefinition(CustomElementDefinition*) const;
+    virtual bool isFeatureAllowed() const;
+    virtual bool validateOptions(const AtomicString& type, ExceptionState&);
+    virtual bool findTagName(const AtomicString& customElementType, QualifiedName& tagName);
+    virtual PassRefPtr<CustomElementLifecycleCallbacks> createCallbacks();
+    virtual bool createConstructor(Document*, CustomElementDefinition*, ExceptionState&);
+    virtual bool didRegisterDefinition(CustomElementDefinition*) const;
 
     // This method collects a return value for the bindings. It is
     // safe to call this method even if the builder failed; it will
     // return an empty value.
-    ScriptValue bindingsReturnValue() const;
+    virtual ScriptValue bindingsReturnValue() const;
 
 private:
     static WrapperTypeInfo* findWrapperType(v8::Handle<v8::Value> chain);
     bool hasValidPrototypeChainFor(V8PerContextData*, WrapperTypeInfo*) const;
     bool prototypeIsValid(const AtomicString& type, ExceptionState&) const;
     v8::Handle<v8::Function> retrieveCallback(v8::Isolate*, const char* name);
 
     v8::Handle<v8::Context> m_context;
     const Dictionary* m_options;
     v8::Handle<v8::Object> m_prototype;
     WrapperTypeInfo* m_wrapperType;
     AtomicString m_namespaceURI;
     v8::Handle<v8::Function> m_constructor;
     RefPtr<V8CustomElementLifecycleCallbacks> m_callbacks;
 };
 
 }
 
 #endif // CustomElementConstructorBuilder_h