Implement aura::WindowPortMus::CreateCompositorFrameSink()

components/viz/client/client_compositor_frame_sink.cc

Index: components/viz/client/client_compositor_frame_sink.cc
diff --git a/components/viz/client/client_compositor_frame_sink.cc b/components/viz/client/client_compositor_frame_sink.cc
index e363f8c58e75735b9ef737af62a2f795a56f7762..59ddd942ae030f9da65e026054a7611bc29a04f9 100644
--- a/components/viz/client/client_compositor_frame_sink.cc
+++ b/components/viz/client/client_compositor_frame_sink.cc
@@ -29,7 +29,8 @@ ClientCompositorFrameSink::ClientCompositorFrameSink(
       compositor_frame_sink_info_(std::move(compositor_frame_sink_info)),
       client_request_(std::move(client_request)),
       client_binding_(this),
-      enable_surface_synchronization_(enable_surface_synchronization) {
+      enable_surface_synchronization_(enable_surface_synchronization),
+      weak_factory_(this) {
   DETACH_FROM_THREAD(thread_checker_);
 }
 
@@ -44,12 +45,19 @@ ClientCompositorFrameSink::ClientCompositorFrameSink(
       compositor_frame_sink_info_(std::move(compositor_frame_sink_info)),
       client_request_(std::move(client_request)),
       client_binding_(this),
-      enable_surface_synchronization_(enable_surface_synchronization) {
+      enable_surface_synchronization_(enable_surface_synchronization),
+      weak_factory_(this) {
   DETACH_FROM_THREAD(thread_checker_);
 }
 
 ClientCompositorFrameSink::~ClientCompositorFrameSink() {}
 
+base::WeakPtr<ClientCompositorFrameSink>
+ClientCompositorFrameSink::GetWeakPtr() {
+  DCHECK_CALLED_ON_VALID_THREAD(thread_checker_);
+  return weak_factory_.GetWeakPtr();
+}
+
 bool ClientCompositorFrameSink::BindToClient(
     cc::CompositorFrameSinkClient* client) {
   DCHECK_CALLED_ON_VALID_THREAD(thread_checker_);
@@ -82,6 +90,7 @@ void ClientCompositorFrameSink::DetachFromClient() {
 
 void ClientCompositorFrameSink::SetLocalSurfaceId(
     const cc::LocalSurfaceId& local_surface_id) {
+  DCHECK_CALLED_ON_VALID_THREAD(thread_checker_);
   DCHECK(local_surface_id.is_valid());
   DCHECK(enable_surface_synchronization_);
   local_surface_id_ = local_surface_id;