Make OffscreenCanvas Transferable

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

Index: third_party/WebKit/Source/bindings/core/v8/Transferables.cpp
diff --git a/third_party/WebKit/Source/bindings/core/v8/Transferables.cpp b/third_party/WebKit/Source/bindings/core/v8/Transferables.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..af5c00f25f8c51f479d14500be6fbb292b55cc20
--- /dev/null
+++ b/third_party/WebKit/Source/bindings/core/v8/Transferables.cpp
@@ -0,0 +1,22 @@
+// 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);
+}
+
+Transferables::Factory Transferables::s_registeredFactory = nullptr;
+
+} // namespace blink