mus: move View Manager to components/mus/vm

components/mus/display_manager_factory.h

-// Copyright 2015 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_DISPLAY_MANAGER_FACTORY_H_
-#define COMPONENTS_MUS_DISPLAY_MANAGER_FACTORY_H_
-
-#include "components/mus/gles2/gpu_state.h"
-#include "third_party/mojo/src/mojo/public/cpp/bindings/callback.h"
-
-namespace mus {
-class ApplicationImpl;
-}  // namespace mus
-
-namespace mus {
-
-class DisplayManager;
-
-// Abstract factory for DisplayManagers. Used by tests to construct test
-// DisplayManagers.
-class DisplayManagerFactory {
- public:
-  virtual DisplayManager* CreateDisplayManager(
-      mojo::ApplicationImpl* app_impl,
-      const scoped_refptr<GpuState>& gpu_state,
-      const scoped_refptr<SurfacesState>& surfaces_state) = 0;
-};
-
-}  // namespace mus
-
-#endif  // COMPONENTS_MUS_DISPLAY_MANAGER_FACTORY_H_