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 3fe17a6c0fdf3a40fcfa2d0be2b67dddef1da713..13e1fafd569f9c529b14c97d93d7d9c9dd0bef86 100644
--- a/components/viz/client/client_compositor_frame_sink.cc
+++ b/components/viz/client/client_compositor_frame_sink.cc
@@ -32,7 +32,8 @@ 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_);
 }
 
@@ -49,12 +50,19 @@ 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_);
@@ -87,6 +95,7 @@ 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;