BrowserMainLoop owns FrameSinkManagerHost

content/browser/renderer_host/offscreen_canvas_surface_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_surface_impl.h"
 
 #include <memory>
 #include <utility>
 
 #include "base/memory/ptr_util.h"
 #include "cc/surfaces/surface_manager.h"
 #include "components/viz/host/frame_sink_manager_host.h"
 #include "content/browser/compositor/surface_utils.h"
 
 namespace content {
 
 OffscreenCanvasSurfaceImpl::OffscreenCanvasSurfaceImpl(
+    viz::FrameSinkManagerHost* frame_sink_manager_host,
     const cc::FrameSinkId& parent_frame_sink_id,
     const cc::FrameSinkId& frame_sink_id,
     blink::mojom::OffscreenCanvasSurfaceClientPtr client,
     blink::mojom::OffscreenCanvasSurfaceRequest request,
     DestroyCallback destroy_callback)
-    : client_(std::move(client)),
+    : frame_sink_manager_host_(frame_sink_manager_host),
+      client_(std::move(client)),
       binding_(this, std::move(request)),
       destroy_callback_(std::move(destroy_callback)),
       frame_sink_id_(frame_sink_id),
       parent_frame_sink_id_(parent_frame_sink_id) {
   binding_.set_connection_error_handler(
       base::Bind(&OffscreenCanvasSurfaceImpl::OnSurfaceConnectionClosed,
                  base::Unretained(this)));
-  GetFrameSinkManagerHost()->AddObserver(this);
+  frame_sink_manager_host_->AddObserver(this);
 }
 
 OffscreenCanvasSurfaceImpl::~OffscreenCanvasSurfaceImpl() {
   if (has_created_compositor_frame_sink_) {
-    GetFrameSinkManagerHost()->UnregisterFrameSinkHierarchy(
+    frame_sink_manager_host_->UnregisterFrameSinkHierarchy(
         parent_frame_sink_id_, frame_sink_id_);
   }
-  GetFrameSinkManagerHost()->RemoveObserver(this);
+  frame_sink_manager_host_->RemoveObserver(this);
 }
 
 void OffscreenCanvasSurfaceImpl::CreateCompositorFrameSink(
     cc::mojom::MojoCompositorFrameSinkClientPtr client,
     cc::mojom::MojoCompositorFrameSinkRequest request) {
   if (has_created_compositor_frame_sink_) {
     DLOG(ERROR) << "CreateCompositorFrameSink() called more than once.";
     return;
   }
 
-  GetFrameSinkManagerHost()->CreateCompositorFrameSink(
+  frame_sink_manager_host_->CreateCompositorFrameSink(
       frame_sink_id_, std::move(request),
       mojo::MakeRequest(&compositor_frame_sink_private_), std::move(client));
 
-  GetFrameSinkManagerHost()->RegisterFrameSinkHierarchy(parent_frame_sink_id_,
-                                                        frame_sink_id_);
+  frame_sink_manager_host_->RegisterFrameSinkHierarchy(parent_frame_sink_id_,
+                                                       frame_sink_id_);
   has_created_compositor_frame_sink_ = true;
 }
 
 void OffscreenCanvasSurfaceImpl::OnSurfaceCreated(
     const cc::SurfaceInfo& surface_info) {
   if (surface_info.id().frame_sink_id() != frame_sink_id_)
     return;
 
   local_surface_id_ = surface_info.id().local_surface_id();
   if (client_)
     client_->OnSurfaceCreated(surface_info);
 }
 
 void OffscreenCanvasSurfaceImpl::Require(const cc::SurfaceId& surface_id,
                                          const cc::SurfaceSequence& sequence) {
   GetSurfaceManager()->RequireSequence(surface_id, sequence);
 }
 
 void OffscreenCanvasSurfaceImpl::Satisfy(const cc::SurfaceSequence& sequence) {
   GetSurfaceManager()->SatisfySequence(sequence);
 }
 
 void OffscreenCanvasSurfaceImpl::OnSurfaceConnectionClosed() {
   std::move(destroy_callback_).Run();
 }
 
 }  // namespace content