Implement WebGL's commit on the main thread

content/browser/renderer_host/offscreen_canvas_frame_receiver_impl.cc

-// 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 "content/browser/renderer_host/offscreen_canvas_frame_receiver_impl.h"
-
-#include "cc/surfaces/surface.h"
-#include "cc/surfaces/surface_manager.h"
-#include "content/browser/compositor/surface_utils.h"
-#include "mojo/public/cpp/bindings/strong_binding.h"
-
-namespace content {
-
-OffscreenCanvasFrameReceiverImpl::OffscreenCanvasFrameReceiverImpl() {}
-
-OffscreenCanvasFrameReceiverImpl::~OffscreenCanvasFrameReceiverImpl() {
-  if (surface_factory_) {
-    if (!GetSurfaceManager()) {
-      // Inform SurfaceFactory that SurfaceManager's no longer alive to
-      // avoid its destruction error.
-      surface_factory_->DidDestroySurfaceManager();
-    } else {
-      GetSurfaceManager()->InvalidateSurfaceClientId(surface_id_.client_id());
-    }
-    surface_factory_->Destroy(surface_id_);
-  }
-}
-
-// static
-void OffscreenCanvasFrameReceiverImpl::Create(
-    blink::mojom::OffscreenCanvasFrameReceiverRequest request) {
-  mojo::MakeStrongBinding(base::MakeUnique<OffscreenCanvasFrameReceiverImpl>(),
-                          std::move(request));
-}
-
-void OffscreenCanvasFrameReceiverImpl::SubmitCompositorFrame(
-    const cc::SurfaceId& surface_id,
-    cc::CompositorFrame frame) {
-  if (!surface_factory_) {
-    cc::SurfaceManager* manager = GetSurfaceManager();
-    surface_factory_ = base::MakeUnique<cc::SurfaceFactory>(manager, this);
-    surface_factory_->Create(surface_id);
-
-    GetSurfaceManager()->RegisterSurfaceClientId(surface_id.client_id());
-  }
-  if (surface_id_.is_null()) {
-    surface_id_ = surface_id;
-    }
-    surface_factory_->SubmitCompositorFrame(surface_id, std::move(frame),
-                                            base::Closure());
-}
-
-// TODO(619136): Implement cc::SurfaceFactoryClient functions for resources
-// return.
-void OffscreenCanvasFrameReceiverImpl::ReturnResources(
-    const cc::ReturnedResourceArray& resources) {}
-
-void OffscreenCanvasFrameReceiverImpl::WillDrawSurface(
-    const cc::SurfaceId& id,
-    const gfx::Rect& damage_rect) {}
-
-void OffscreenCanvasFrameReceiverImpl::SetBeginFrameSource(
-    cc::BeginFrameSource* begin_frame_source) {}
-
-}  // namespace content