BrowserMainLoop owns FrameSinkManagerHost

content/browser/renderer_host/offscreen_canvas_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_provider_impl.h"
 
 #include "base/bind.h"
 #include "content/browser/renderer_host/offscreen_canvas_surface_impl.h"
 
 namespace content {
 
 OffscreenCanvasProviderImpl::OffscreenCanvasProviderImpl(
+    viz::FrameSinkManagerHost* frame_sink_manager_host,
     uint32_t renderer_client_id)
-    : renderer_client_id_(renderer_client_id) {}
+    : frame_sink_manager_host_(frame_sink_manager_host),
+      renderer_client_id_(renderer_client_id) {}
 
 OffscreenCanvasProviderImpl::~OffscreenCanvasProviderImpl() = default;
 
 void OffscreenCanvasProviderImpl::Add(
     blink::mojom::OffscreenCanvasProviderRequest request) {
   bindings_.AddBinding(this, std::move(request));
 }
 
 void OffscreenCanvasProviderImpl::CreateOffscreenCanvasSurface(
     const cc::FrameSinkId& parent_frame_sink_id,
     const cc::FrameSinkId& frame_sink_id,
     blink::mojom::OffscreenCanvasSurfaceClientPtr client,
     blink::mojom::OffscreenCanvasSurfaceRequest request) {
   // TODO(kylechar): Kill the renderer too.
   if (parent_frame_sink_id.client_id() != renderer_client_id_) {
     DLOG(ERROR) << "Invalid parent client id " << parent_frame_sink_id;
     return;
   }
   if (frame_sink_id.client_id() != renderer_client_id_) {
     DLOG(ERROR) << "Invalid client id " << frame_sink_id;
     return;
   }
 
   auto destroy_callback = base::BindOnce(
       &OffscreenCanvasProviderImpl::DestroyOffscreenCanvasSurface,
       base::Unretained(this), frame_sink_id);
 
   canvas_map_[frame_sink_id] = base::MakeUnique<OffscreenCanvasSurfaceImpl>(
-      parent_frame_sink_id, frame_sink_id, std::move(client),
-      std::move(request), std::move(destroy_callback));
+      frame_sink_manager_host_, parent_frame_sink_id, frame_sink_id,
+      std::move(client), std::move(request), std::move(destroy_callback));
 }
 
 void OffscreenCanvasProviderImpl::CreateCompositorFrameSink(
     const cc::FrameSinkId& frame_sink_id,
     cc::mojom::MojoCompositorFrameSinkClientPtr client,
     cc::mojom::MojoCompositorFrameSinkRequest request) {
   // TODO(kylechar): Kill the renderer too.
   if (frame_sink_id.client_id() != renderer_client_id_) {
     DLOG(ERROR) << "Invalid client id " << frame_sink_id;
     return;
   }
 
   auto iter = canvas_map_.find(frame_sink_id);
   if (iter == canvas_map_.end()) {
     DLOG(ERROR) << "No OffscreenCanvasSurfaceImpl for " << frame_sink_id;
     return;
   }
 
   iter->second->CreateCompositorFrameSink(std::move(client),
                                           std::move(request));
 }
 
 void OffscreenCanvasProviderImpl::DestroyOffscreenCanvasSurface(
     cc::FrameSinkId frame_sink_id) {
   canvas_map_.erase(frame_sink_id);
 }
 
 }  // namespace content