bindings: Adds DOMArrayBuffer, etc. as thin wrappers for ArrayBuffer, etc.

Source/core/dom/DOMArrayBufferDeallocationObserver.h

+// Copyright 2014 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef DOMArrayBufferDeallocationObserver_h
+#define DOMArrayBufferDeallocationObserver_h
+
+#include "wtf/ArrayBufferDeallocationObserver.h"
+
+namespace blink {
+
+class DOMArrayBufferDeallocationObserver final : public WTF::ArrayBufferDeallocationObserver {
+public:
+    static DOMArrayBufferDeallocationObserver* instance();
+
+    virtual void arrayBufferDeallocated(unsigned sizeInBytes) override;
+
+protected:
+    virtual void blinkAllocatedMemory(unsigned sizeInBytes) override;
+};
+
+} // namespace blink
+
+#endif // DOMArrayBufferDeallocationObserver_h