Implement ScriptPromise and ScriptFunction

Source/bindings/v8/ScopedPersistent.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
@@ skipping 46 matching lines @@
         return v8::Local<T>::New(isolate, m_handle);
     }
 
     template<typename P>
     void makeWeak(P* parameters, void (*callback)(v8::Isolate*, v8::Persistent<T>*, P*))
     {
         m_handle.MakeWeak(parameters, callback);
     }
 
     bool isEmpty() const { return m_handle.IsEmpty(); }
+    bool isWeak() const { return m_handle.IsWeak(); }
 
     void set(v8::Isolate* isolate, v8::Handle<T> handle)
     {
         m_handle.Reset(isolate, handle);
     }
 
     // Note: This is clear in the OwnPtr sense, not the v8::Handle sense.
     void clear()
     {
         if (m_handle.IsEmpty())
             return;
         m_handle.Dispose();
         m_handle.Clear();
     }
 
     bool operator==(const ScopedPersistent<T>& other)
     {
         return m_handle == other.m_handle;
     }
 
+    template <class S>
+    bool operator==(const v8::Handle<S> other) const
+    {
+        return m_handle == other;
+    }
+
 private:
     // FIXME: This function does an unsafe handle access. Remove it.
     friend class V8AbstractEventListener;
     friend class V8PerIsolateData;
     ALWAYS_INLINE v8::Persistent<T>& getUnsafe()
     {
         return m_handle;
     }
 
     v8::Persistent<T> m_handle;
 };
 
 } // namespace WebCore
 
 #endif // ScopedPersistent_h