WIP: move OffscreenCanvas into new display compositor

components/display_compositor/gpu_offscreen_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_offscreen_compositor_frame_sink.h"
 
 namespace display_compositor {
 
 GpuOffscreenCompositorFrameSink::GpuOffscreenCompositorFrameSink(
     GpuCompositorFrameSinkDelegate* delegate,
     cc::SurfaceManager* surface_manager,
     const cc::FrameSinkId& frame_sink_id,
     cc::mojom::MojoCompositorFrameSinkRequest request,
     cc::mojom::MojoCompositorFrameSinkPrivateRequest
         compositor_frame_sink_private_request,
     cc::mojom::MojoCompositorFrameSinkClientPtr client)
-    : GpuCompositorFrameSink(delegate,
-                             base::MakeUnique<cc::CompositorFrameSinkSupport>(
-                                 this,
-                                 surface_manager,
-                                 frame_sink_id,
-                                 false /* is_root */,
-                                 true /* handles_frame_sink_id_invalidation */,
-                                 true /* needs_sync_points */),
-                             std::move(compositor_frame_sink_private_request),
-                             std::move(client)),
+    : GpuCompositorFrameSinkBase(
+          delegate,
+          base::MakeUnique<cc::CompositorFrameSinkSupport>(
+              this,
+              surface_manager,
+              frame_sink_id,
+              false /* is_root */,
+              true /* handles_frame_sink_id_invalidation */,
+              true /* needs_sync_points */),
+          std::move(compositor_frame_sink_private_request),
+          std::move(client)),
       binding_(this, std::move(request)) {
   binding_.set_connection_error_handler(
       base::Bind(&GpuOffscreenCompositorFrameSink::OnClientConnectionLost,
                  base::Unretained(this)));
 }
 
 GpuOffscreenCompositorFrameSink::~GpuOffscreenCompositorFrameSink() = default;
 
 }  // namespace display_compositor