Mus: Introduce DisplayCompositorClient mojo interface

services/ui/surfaces/display_compositor_client.h

Index: services/ui/surfaces/display_compositor_client.h
diff --git a/services/ui/surfaces/display_compositor_client.h b/services/ui/surfaces/display_compositor_client.h
deleted file mode 100644
index 5d7436b98d3627865c20013f75e24a8e73aed1ed..0000000000000000000000000000000000000000
--- a/services/ui/surfaces/display_compositor_client.h
+++ /dev/null
@@ -1,24 +0,0 @@
-// 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 SERVICES_UI_SURFACES_DISPLAY_COMPOSITOR_CLIENT_H_
-#define SERVICES_UI_SURFACES_DISPLAY_COMPOSITOR_CLIENT_H_
-
-namespace ui {
-
-// TODO(fsamuel: In the future, this will be a mojo interface from mus-gpu to
-// mus-ws.
-class DisplayCompositorClient {
- public:
-  virtual void OnSurfaceCreated(const cc::SurfaceId& surface_id,
-                                const gfx::Size& frame_size,
-                                float device_scale_factor) = 0;
-
- protected:
-  virtual ~DisplayCompositorClient() {}
-};
-
-}  // namespace ui
-
-#endif  // SERVICES_UI_SURFACES_DISPLAY_COMPOSITOR_CLIENT_H_