Removes code using mus client lib

ui/views/mus/surface_context_factory.cc

-// 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.
-
-#include "ui/views/mus/surface_context_factory.h"
-
-#include "base/memory/ptr_util.h"
-#include "cc/resources/shared_bitmap_manager.h"
-#include "cc/surfaces/surface_id_allocator.h"
-#include "services/ui/public/cpp/gpu/gpu.h"
-#include "services/ui/public/cpp/window.h"
-#include "services/ui/public/cpp/window_compositor_frame_sink.h"
-#include "ui/compositor/reflector.h"
-#include "ui/gl/gl_bindings.h"
-#include "ui/views/mus/native_widget_mus.h"
-
-namespace views {
-
-SurfaceContextFactory::SurfaceContextFactory(ui::Gpu* gpu) : gpu_(gpu) {}
-
-SurfaceContextFactory::~SurfaceContextFactory() {}
-
-void SurfaceContextFactory::CreateCompositorFrameSink(
-    base::WeakPtr<ui::Compositor> compositor) {
-  ui::Window* window = compositor->window();
-  NativeWidgetMus* native_widget = NativeWidgetMus::GetForWindow(window);
-  ui::mojom::CompositorFrameSinkType compositor_frame_sink_type =
-      native_widget->compositor_frame_sink_type();
-  auto compositor_frame_sink = window->RequestCompositorFrameSink(
-      compositor_frame_sink_type,
-      gpu_->CreateContextProvider(gpu_->EstablishGpuChannelSync()),
-      gpu_->gpu_memory_buffer_manager());
-  compositor->SetCompositorFrameSink(std::move(compositor_frame_sink));
-}
-
-scoped_refptr<cc::ContextProvider>
-SurfaceContextFactory::SharedMainThreadContextProvider() {
-  // NOTIMPLEMENTED();
-  return nullptr;
-}
-
-void SurfaceContextFactory::RemoveCompositor(ui::Compositor* compositor) {
-  // NOTIMPLEMENTED();
-}
-
-bool SurfaceContextFactory::DoesCreateTestContexts() {
-  return false;
-}
-
-uint32_t SurfaceContextFactory::GetImageTextureTarget(gfx::BufferFormat format,
-                                                      gfx::BufferUsage usage) {
-  // No GpuMemoryBuffer support, so just return GL_TEXTURE_2D.
-  return GL_TEXTURE_2D;
-}
-
-gpu::GpuMemoryBufferManager*
-SurfaceContextFactory::GetGpuMemoryBufferManager() {
-  return gpu_->gpu_memory_buffer_manager();
-}
-
-cc::TaskGraphRunner* SurfaceContextFactory::GetTaskGraphRunner() {
-  return raster_thread_helper_.task_graph_runner();
-}
-
-}  // namespace views