Removes code using mus client lib

ui/views/mus/surface_context_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 UI_VIEWS_MUS_SURFACE_CONTEXT_FACTORY_H_
-#define UI_VIEWS_MUS_SURFACE_CONTEXT_FACTORY_H_
-
-#include <stdint.h>
-
-#include "base/macros.h"
-#include "cc/surfaces/surface_manager.h"
-#include "services/ui/public/cpp/raster_thread_helper.h"
-#include "services/ui/public/interfaces/window_tree.mojom.h"
-#include "ui/compositor/compositor.h"
-#include "ui/views/mus/mus_export.h"
-
-namespace ui {
-class Gpu;
-}
-
-namespace views {
-
-class VIEWS_MUS_EXPORT SurfaceContextFactory : public ui::ContextFactory {
- public:
-  explicit SurfaceContextFactory(ui::Gpu* gpu);
-  ~SurfaceContextFactory() override;
-
- private:
-  // ContextFactory:
-  void CreateCompositorFrameSink(
-      base::WeakPtr<ui::Compositor> compositor) override;
-  scoped_refptr<cc::ContextProvider> SharedMainThreadContextProvider() override;
-  void RemoveCompositor(ui::Compositor* compositor) override;
-  bool DoesCreateTestContexts() override;
-  uint32_t GetImageTextureTarget(gfx::BufferFormat format,
-                                 gfx::BufferUsage usage) override;
-  gpu::GpuMemoryBufferManager* GetGpuMemoryBufferManager() override;
-  cc::TaskGraphRunner* GetTaskGraphRunner() override;
-  void AddObserver(ui::ContextFactoryObserver* observer) override {}
-  void RemoveObserver(ui::ContextFactoryObserver* observer) override {}
-
-  ui::RasterThreadHelper raster_thread_helper_;
-  ui::Gpu* gpu_;
-
-  DISALLOW_COPY_AND_ASSIGN(SurfaceContextFactory);
-};
-
-}  // namespace views
-
-#endif  // UI_VIEWS_MUS_SURFACE_CONTEXT_FACTORY_H_