Introduce DisplayCompositor Mojo API for Mus

components/mus/surfaces/display_compositor_impl.cc

+// Copyright 2016 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/mus/surfaces/display_compositor_impl.h"
+
+#include "components/mus/surfaces/display_impl.h"
+
+namespace mus {
+namespace gpu {
+
+DisplayCompositorImpl::DisplayCompositorImpl(
+    mojo::InterfaceRequest<mojom::DisplayCompositor> request)
+    : binding_(this, std::move(request)) {}
+
+DisplayCompositorImpl::~DisplayCompositorImpl() {}
+
+void DisplayCompositorImpl::CreateDisplay(
+    int accelerated_widget,
+    mojo::InterfaceRequest<mojom::Display> display,
+    mojom::DisplayHostPtr host,
+    mojo::InterfaceRequest<mojom::CompositorFrameSink> sink,
+    mojom::CompositorFrameSinkClientPtr client) {
+  NOTIMPLEMENTED();
+}
+
+}  // namespace gpu
+}  // namespace mus