Introduce Promises.

Source/bindings/v8/custom/V8PromiseCustom.h

 /*
- * Copyright (C) 2011, Google Inc. All rights reserved.
+ * 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:
  * 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
  *    notice, this list of conditions and the following disclaimer in the
  *    documentation and/or other materials provided with the distribution.
  *
  * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' AND ANY
  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  * DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE FOR ANY
  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
  * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#ifndef AudioBufferCallback_h
-#define AudioBufferCallback_h
+#ifndef V8PromiseCustom_h
+#define V8PromiseCustom_h
 
-#if ENABLE(WEB_AUDIO)
-
-#include "wtf/RefCounted.h"
+#include <v8.h>
 
 namespace WebCore {
 
-class AudioBuffer;
+class V8PromiseCustom {
+public:
+    enum InternalFieldIndex {
+        InternalStateIndex,
+        InternalResultIndex,
+        InternalFulfillCallbackIndex,
+        InternalRejectCallbackIndex,
+        InternalFieldCount, // This entry must always be at the bottom.
+    };
 
-class AudioBufferCallback : public RefCounted<AudioBufferCallback> {
-public:
-    virtual ~AudioBufferCallback() { }
-    virtual bool handleEvent(AudioBuffer*) = 0;
+    enum PromiseStatus {
+        Pending,
+        Fulfilled,
+        Rejected,
+    };
 };
 
-} // namespace
+} // namespace WebCore
 
-#endif // ENABLE(WEB_AUDIO)
-
-#endif // AudioBufferCallback_h
+#endif // V8PromiseCustom_h