Introduce Promises.

Source/bindings/v8/custom/V8PromiseCustom.h

Index: Source/bindings/v8/custom/V8PromiseCustom.h
diff --git a/Source/modules/webaudio/OfflineAudioContext.h b/Source/bindings/v8/custom/V8PromiseCustom.h
similarity index 71%
copy from Source/modules/webaudio/OfflineAudioContext.h
copy to Source/bindings/v8/custom/V8PromiseCustom.h
index d8604e15b15237738eaa6bb0d83e824f5bbb0f4b..fb9db9041d9a02378d42b7e7483cff290ca109cc 100644
--- a/Source/modules/webaudio/OfflineAudioContext.h
+++ b/Source/bindings/v8/custom/V8PromiseCustom.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2012, 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
@@ -22,23 +22,30 @@
  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#ifndef OfflineAudioContext_h
-#define OfflineAudioContext_h
+#ifndef V8PromiseCustom_h
+#define V8PromiseCustom_h
 
-#include "modules/webaudio/AudioContext.h"
+#include <v8.h>
 
 namespace WebCore {
 
-class OfflineAudioContext : public AudioContext {
+class V8PromiseCustom {
 public:
-    static PassRefPtr<OfflineAudioContext> create(ScriptExecutionContext*, unsigned numberOfChannels, size_t numberOfFrames, float sampleRate, ExceptionCode&);
-
-    virtual ~OfflineAudioContext();
-
-private:
-    OfflineAudioContext(Document*, unsigned numberOfChannels, size_t numberOfFrames, float sampleRate);
+    enum AssociatedInformationInternalFieldIndex {
+        AssociatedStatusIndex,
+        AssociatedResultIndex,
+        AssociatedFulfillCallbackIndex,
+        AssociatedRejectCallbackIndex,
+        AssociatedInternalFieldCount, // This entry must always be at the bottom.
+    };
+
+    enum PromiseStatus {
+        Pending,
+        Fulfilled,
+        Rejected,
+    };
 };
 
 } // namespace WebCore
 
-#endif // OfflineAudioContext_h
+#endif // V8PromiseCustom_h