Introduce DisplayCompositor Mojo API for Mus

components/mus/surfaces/display_impl.h

+// 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_IMPL_H_
+#define COMPONENTS_MUS_SURFACES_DISPLAY_IMPL_H_
+
+#include "components/mus/public/interfaces/display_compositor_host.mojom.h"
+#include "components/mus/surfaces/compositor_frame_sink_delegate.h"
+#include "components/mus/surfaces/surfaces_state.h"
+#include "mojo/public/cpp/bindings/binding.h"
+
+namespace mus {
+
+class DisplayImpl : public mojom::Display, public CompositorFrameSinkDelegate {
+ public:
+  DisplayImpl(int accelerated_widget,
+              mojo::InterfaceRequest<mojom::Display> display,
+              mojom::DisplayHostPtr host,
+              mojo::InterfaceRequest<mojom::CompositorFrameSink> sink,
+              mojom::CompositorFrameSinkClientPtr client,
+              const scoped_refptr<SurfacesState>& surfaces_state);
+  ~DisplayImpl() override;
+
+  // mojom::Display implementation.
+  void CreateClient(
+      uint32_t client_id,
+      mojo::InterfaceRequest<mojom::DisplayClient> client) override;
+
+ private:
+  // CompositorFrameSinkDelegate implementation:
+  void CompositorFrameSinkConnectionLost(int sink_id) override;
+  cc::SurfaceId GenerateSurfaceId() override;
+
+  std::unique_ptr<CompositorFrameSinkImpl> sink_;
+  mojo::Binding<mojom::Display> binding_;
+  DISALLOW_COPY_AND_ASSIGN(DisplayImpl);
+};
+
+}  // namespace mus
+
+#endif  // COMPONENTS_MUS_SURFACES_DISPLAY_IMPL_H_