Introduce DisplayCompositor Mojo API for Mus

components/mus/surfaces/display_compositor_impl.h

Index: components/mus/surfaces/display_compositor_impl.h
diff --git a/components/mus/surfaces/display_compositor_impl.h b/components/mus/surfaces/display_compositor_impl.h
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+// 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.
+
+#ifndef COMPONENTS_MUS_SURFACES_DISPLAY_COMPOSITOR_IMPL_H_
+#define COMPONENTS_MUS_SURFACES_DISPLAY_COMPOSITOR_IMPL_H_
+
+#include "components/mus/public/interfaces/display_compositor_host.mojom.h"
+#include "mojo/public/cpp/bindings/strong_binding.h"
+
+namespace mus {
+
+class DisplayCompositorImpl : public mojom::DisplayCompositor {
+ public:
+  explicit DisplayCompositorImpl(
+      mojo::InterfaceRequest<mojom::DisplayCompositor> request);
+  ~DisplayCompositorImpl() override;
+
+  // mojom::DisplayCompositor implementation.
+  void CreateDisplay(int accelerated_widget,
+                     mojo::InterfaceRequest<mojom::Display> display,
+                     mojom::DisplayClientPtr client) override;
+
+ private:
+  mojo::StrongBinding<mojom::DisplayCompositor> binding_;
+
+  DISALLOW_COPY_AND_ASSIGN(DisplayCompositorImpl);
+};
+
+}  // namespace mus
+
+#endif  // COMPONENTS_MUS_SURFACES_DISPLAY_COMPOSITOR_IMPL_H_