WebMessaging: Send transferable ArrayBuffers by copy-and-neuter semantics

third_party/WebKit/Source/modules/compositorworker/CompositorWorkerGlobalScope.h

 // Copyright 2015 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 CompositorWorkerGlobalScope_h
 #define CompositorWorkerGlobalScope_h
 
 #include "core/dom/CompositorProxyClient.h"
 #include "core/dom/FrameRequestCallbackCollection.h"
 #include "core/dom/MessagePort.h"
@@ skipping 19 matching lines @@
 
   void dispose() override;
 
   // EventTarget
   const AtomicString& interfaceName() const override;
 
   void postMessage(ExecutionContext*,
                    PassRefPtr<SerializedScriptValue>,
                    const MessagePortArray&,
                    ExceptionState&);
+  static bool canTransferArrayBuffer() { return true; }
   DEFINE_ATTRIBUTE_EVENT_LISTENER(message);
 
   int requestAnimationFrame(FrameRequestCallback*);
   void cancelAnimationFrame(int id);
   bool executeAnimationFrameCallbacks(double highResTimeMs);
 
   // ExecutionContext:
   bool isCompositorWorkerGlobalScope() const override { return true; }
 
   DECLARE_VIRTUAL_TRACE();
 
  private:
   CompositorWorkerGlobalScope(const KURL&,
                               const String& userAgent,
                               CompositorWorkerThread*,
                               double timeOrigin,
                               std::unique_ptr<SecurityOrigin::PrivilegeData>,
                               WorkerClients*);
   CompositorWorkerThread* thread() const;
 
   bool m_executingAnimationFrameCallbacks;
   FrameRequestCallbackCollection m_callbackCollection;
 };
 
 }  // namespace blink
 
 #endif  // CompositorWorkerGlobalScope_h