Introduce DisplayCompositor Mojo API for Mus

components/mus/surfaces/display_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_impl.h"
+
+namespace mus {
+
+DisplayImpl::DisplayImpl(int accelerated_widget,
+                         mojo::InterfaceRequest<mojom::Display> display,
+                         mojom::DisplayClientPtr client)
+    : binding_(this, std::move(display)) {}
+
+DisplayImpl::~DisplayImpl() {}
+
+void DisplayImpl::CreateClient(
+    uint32_t client_id,
+    mojo::InterfaceRequest<mojom::DisplayClient> client) {
+  NOTIMPLEMENTED();
+}
+
+}  // namespace mus