Implement WebGL's commit on the main thread

content/browser/renderer_host/offscreen_canvas_frame_receiver_impl.h

-// 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.
-
-#ifndef CONTENT_BROWSER_RENDERER_HOST_OFFSCREEN_CANVAS_FRAME_RECEIVER_IMPL_H_
-#define CONTENT_BROWSER_RENDERER_HOST_OFFSCREEN_CANVAS_FRAME_RECEIVER_IMPL_H_
-
-#include "cc/surfaces/surface_factory.h"
-#include "cc/surfaces/surface_factory_client.h"
-#include "third_party/WebKit/public/platform/modules/offscreencanvas/offscreen_canvas_surface.mojom.h"
-
-namespace content {
-
-class OffscreenCanvasFrameReceiverImpl
-    : public blink::mojom::OffscreenCanvasFrameReceiver,
-      public cc::SurfaceFactoryClient {
- public:
-  OffscreenCanvasFrameReceiverImpl();
-  ~OffscreenCanvasFrameReceiverImpl() override;
-
-  static void Create(blink::mojom::OffscreenCanvasFrameReceiverRequest request);
-
-  void SubmitCompositorFrame(const cc::SurfaceId& surface_id,
-                             cc::CompositorFrame frame) override;
-
-  // cc::SurfaceFactoryClient implementation.
-  void ReturnResources(const cc::ReturnedResourceArray& resources) override;
-  void WillDrawSurface(const cc::SurfaceId& id,
-                       const gfx::Rect& damage_rect) override;
-  void SetBeginFrameSource(cc::BeginFrameSource* begin_frame_source) override;
-
- private:
-  cc::SurfaceId surface_id_;
-  std::unique_ptr<cc::SurfaceFactory> surface_factory_;
-
-  DISALLOW_COPY_AND_ASSIGN(OffscreenCanvasFrameReceiverImpl);
-};
-
-}  // namespace content
-
-#endif  // CONTENT_BROWSER_RENDERER_HOST_OFFSCREEN_CANVAS_FRAME_RECEIVER_IMPL_H_