Implement aura::WindowPortMus::CreateCompositorFrameSink()

ui/aura/mus/window_tree_client.cc

 // Copyright 2014 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 "ui/aura/mus/window_tree_client.h"
 
 #include <stddef.h>
 
 #include <string>
 #include <utility>
@@ skipping 929 matching lines @@
   has_pointer_watcher_ = true;
   tree_->StartPointerWatcher(want_moves);
 }
 
 void WindowTreeClient::StopPointerWatcher() {
   DCHECK(has_pointer_watcher_);
   tree_->StopPointerWatcher();
   has_pointer_watcher_ = false;
 }
 
+cc::FrameSinkId WindowTreeClient::GetFrameSinkId(Id window_id) {
+  DCHECK(tree_);
+  base::Optional<cc::FrameSinkId> frame_sink_id;
+  mojo::SyncCallRestrictions::ScopedAllowSyncCall allow_sync_call;
+  if (!tree_->GetFrameSinkId(window_id, &frame_sink_id) || !frame_sink_id) {
+    DLOG(WARNING) << "GetFrameSinkId failed!";
+    return cc::FrameSinkId();
+  }
+  return *frame_sink_id;
+}
+
 void WindowTreeClient::AddObserver(WindowTreeClientObserver* observer) {
   observers_.AddObserver(observer);
 }
 
 void WindowTreeClient::RemoveObserver(WindowTreeClientObserver* observer) {
   observers_.RemoveObserver(observer);
 }
 
 void WindowTreeClient::AddTestObserver(WindowTreeClientTestObserver* observer) {
   test_observers_.AddObserver(observer);
@@ skipping 1116 matching lines @@
 }
 
 void WindowTreeClient::OnCompositingLockStateChanged(
     ui::Compositor* compositor) {}
 
 void WindowTreeClient::OnCompositingShuttingDown(ui::Compositor* compositor) {
   compositor->RemoveObserver(this);
 }
 
 }  // namespace aura