Remove two NOTIMPLEMENTED() added in CL 2544103002 to reduce console spam

ui/aura/mus/window_compositor_frame_sink.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_compositor_frame_sink.h"
 
 #include "base/bind.h"
 #include "cc/output/compositor_frame_sink_client.h"
 #include "gpu/ipc/client/gpu_channel_host.h"
 
@@ skipping 95 matching lines @@
     const cc::ReturnedResourceArray& resources) {
   DCHECK(thread_checker_);
   DCHECK(thread_checker_->CalledOnValidThread());
   if (!client_)
     return;
   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);
 }
 
 WindowCompositorFrameSinkBinding::~WindowCompositorFrameSinkBinding() {}
 
 WindowCompositorFrameSinkBinding::WindowCompositorFrameSinkBinding(
     cc::mojom::MojoCompositorFrameSinkRequest compositor_frame_sink_request,
     mojo::InterfacePtrInfo<cc::mojom::MojoCompositorFrameSinkClient>
         compositor_frame_sink_client)
     : compositor_frame_sink_request_(std::move(compositor_frame_sink_request)),
       compositor_frame_sink_client_(std::move(compositor_frame_sink_client)) {}
 
 }  // namespace aura