Implement temporary reference assignment with DisplayCompositor.

components/display_compositor/gpu_root_compositor_frame_sink.cc

Index: components/display_compositor/gpu_root_compositor_frame_sink.cc
diff --git a/components/display_compositor/gpu_root_compositor_frame_sink.cc b/components/display_compositor/gpu_root_compositor_frame_sink.cc
index 4254c6b9f0a70601efc1e8a4e1de0f6020eac00b..90d39c3249e53bb6c3c41122ce16f9a69d902ef2 100644
--- a/components/display_compositor/gpu_root_compositor_frame_sink.cc
+++ b/components/display_compositor/gpu_root_compositor_frame_sink.cc
@@ -109,6 +109,11 @@ void GpuRootCompositorFrameSink::RemoveChildFrameSink(
   support_->RemoveChildFrameSink(child_frame_sink_id);
 }
 
+void GpuRootCompositorFrameSink::ClaimTemporaryReference(
+    const cc::SurfaceId& surface_id) {
+  support_->ClaimTemporaryReference(surface_id);
+}
+
 void GpuRootCompositorFrameSink::RequestCopyOfSurface(
     std::unique_ptr<cc::CopyOutputRequest> request) {
   support_->RequestCopyOfSurface(std::move(request));