Added MojoCompositorFrameSink::EvictFrame() and MojoCompositorFrameSinkClient::WillDrawSurface()

services/ui/public/cpp/window_compositor_frame_sink.cc

Index: services/ui/public/cpp/window_compositor_frame_sink.cc
diff --git a/services/ui/public/cpp/window_compositor_frame_sink.cc b/services/ui/public/cpp/window_compositor_frame_sink.cc
index d75665004f61497d7f4ecf8e2471bb068fa84def..4c2e863522bd49e01f4564baf7779515532f7bb8 100644
--- a/services/ui/public/cpp/window_compositor_frame_sink.cc
+++ b/services/ui/public/cpp/window_compositor_frame_sink.cc
@@ -113,6 +113,11 @@ void WindowCompositorFrameSink::ReclaimResources(
   client_->ReclaimResources(resources);
 }
 
+void WindowCompositorFrameSink::WillDrawSurface() {
+  // TODO(fsamuel, staraz): Implement this.
+  NOTIMPLEMENTED();
+}
+
 void WindowCompositorFrameSink::OnNeedsBeginFrames(bool needs_begin_frames) {
   compositor_frame_sink_->SetNeedsBeginFrame(needs_begin_frames);
 }