Convert offscreen canvas to use FrameSinkManagerHost.

content/browser/renderer_host/offscreen_canvas_compositor_frame_sink_provider_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_compositor_frame_sink_provider_impl.h"
-
-#include "base/memory/ptr_util.h"
-#include "content/browser/compositor/surface_utils.h"
-#include "content/browser/renderer_host/offscreen_canvas_compositor_frame_sink.h"
-#include "content/browser/renderer_host/offscreen_canvas_compositor_frame_sink_manager.h"
-#include "mojo/public/cpp/bindings/strong_binding.h"
-
-namespace content {
-
-OffscreenCanvasCompositorFrameSinkProviderImpl::
-    OffscreenCanvasCompositorFrameSinkProviderImpl() {}
-
-OffscreenCanvasCompositorFrameSinkProviderImpl::
-    ~OffscreenCanvasCompositorFrameSinkProviderImpl() {}
-
-void OffscreenCanvasCompositorFrameSinkProviderImpl::Add(
-    blink::mojom::OffscreenCanvasCompositorFrameSinkProviderRequest request) {
-  bindings_.AddBinding(this, std::move(request));
-}
-
-void OffscreenCanvasCompositorFrameSinkProviderImpl::CreateCompositorFrameSink(
-    const cc::FrameSinkId& frame_sink_id,
-    cc::mojom::MojoCompositorFrameSinkClientPtr client,
-    cc::mojom::MojoCompositorFrameSinkRequest request) {
-  compositor_frame_sinks_[frame_sink_id] =
-      base::MakeUnique<OffscreenCanvasCompositorFrameSink>(
-          this, frame_sink_id, std::move(request), std::move(client));
-
-  OffscreenCanvasCompositorFrameSinkManager::GetInstance()
-      ->RegisterFrameSinkToParent(frame_sink_id);
-}
-
-cc::SurfaceManager*
-OffscreenCanvasCompositorFrameSinkProviderImpl::GetSurfaceManager() {
-  return content::GetSurfaceManager();
-}
-
-void OffscreenCanvasCompositorFrameSinkProviderImpl::
-    OnCompositorFrameSinkClientConnectionLost(
-        const cc::FrameSinkId& frame_sink_id) {
-  // TODO(fsamuel, xlai): Investigate why this function is not fired when user
-  // close down the window that has OffscreenCanvas commit().
-  compositor_frame_sinks_.erase(frame_sink_id);
-}
-
-void OffscreenCanvasCompositorFrameSinkProviderImpl::
-    OnCompositorFrameSinkClientDestroyed(const cc::FrameSinkId& frame_sink_id) {
-  OffscreenCanvasCompositorFrameSinkManager::GetInstance()
-      ->UnregisterFrameSinkFromParent(frame_sink_id);
-}
-
-}  // namespace content