Make OffscreenCanvas Transferable

third_party/WebKit/Source/bindings/core/v8/Transferables.cpp

+// Copyright 2016 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.
+
+#include "bindings/core/v8/Transferables.h"
+
+#include "core/dom/DOMArrayBufferBase.h"
+#include "core/dom/MessagePort.h"
+#include "core/frame/ImageBitmap.h"
+
+namespace blink {
+
+DEFINE_TRACE(Transferables)
+{
+    visitor->trace(arrayBuffers);
+    visitor->trace(imageBitmaps);
+    visitor->trace(messagePorts);
+}
+
+} // namespace blink