Move DisplayCompositor code to new component.

components/frame_sinks/gpu_root_compositor_frame_sink.cc

 // Copyright 2017 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 "components/display_compositor/gpu_root_compositor_frame_sink.h"
+#include "components/frame_sinks/gpu_root_compositor_frame_sink.h"
 
 #include "cc/surfaces/compositor_frame_sink_support.h"
 #include "cc/surfaces/display.h"
 
-namespace display_compositor {
+namespace frame_sinks {
 
 GpuRootCompositorFrameSink::GpuRootCompositorFrameSink(
     GpuCompositorFrameSinkDelegate* delegate,
     cc::SurfaceManager* surface_manager,
     const cc::FrameSinkId& frame_sink_id,
     std::unique_ptr<cc::Display> display,
     std::unique_ptr<cc::BeginFrameSource> begin_frame_source,
     cc::mojom::MojoCompositorFrameSinkAssociatedRequest request,
     cc::mojom::MojoCompositorFrameSinkPrivateRequest
         compositor_frame_sink_private_request,
@@ skipping 119 matching lines @@
                                     private_connection_lost_);
 }
 
 void GpuRootCompositorFrameSink::OnPrivateConnectionLost() {
   private_connection_lost_ = true;
   // Request destruction of |this| only if both connections are lost.
   delegate_->OnPrivateConnectionLost(support_->frame_sink_id(),
                                      client_connection_lost_);
 }
 
-}  // namespace display_compositor
+}  // namespace frame_sinks