ash/mash: Add a mus-client that sets up ash to provide the system ui for mash.

ash/mus/stub_context_factory.cc

+// 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.
+
+#include "ash/mus/stub_context_factory.h"
+
+#include "cc/output/context_provider.h"
+#include "cc/raster/single_thread_task_graph_runner.h"
+#include "cc/surfaces/surface_id_allocator.h"
+#include "third_party/khronos/GLES2/gl2.h"
+#include "ui/compositor/reflector.h"
+
+namespace ash {
+namespace sysui {
+
+namespace {
+
+class StubTaskGraphRunner : public cc::SingleThreadTaskGraphRunner {
+ public:
+  StubTaskGraphRunner() {
+    Start("CompositorTileWorker1", base::SimpleThread::Options());
+  }
+  ~StubTaskGraphRunner() override {}
+};
+
+}  // namespace
+
+StubContextFactory::StubContextFactory()
+    : next_surface_id_namespace_(1u),
+      task_graph_runner_(new StubTaskGraphRunner) {}
+
+StubContextFactory::~StubContextFactory() {}
+
+void StubContextFactory::CreateOutputSurface(
+    base::WeakPtr<ui::Compositor> compositor) {}
+
+scoped_ptr<ui::Reflector> StubContextFactory::CreateReflector(
+    ui::Compositor* mirrored_compositor,
+    ui::Layer* mirroring_layer) {
+  return nullptr;
+}
+
+void StubContextFactory::RemoveReflector(ui::Reflector* reflector) {}
+
+scoped_refptr<cc::ContextProvider>
+StubContextFactory::SharedMainThreadContextProvider() {
+  return nullptr;
+}
+
+void StubContextFactory::RemoveCompositor(ui::Compositor* compositor) {}
+
+bool StubContextFactory::DoesCreateTestContexts() {
+  return false;
+}
+
+uint32_t StubContextFactory::GetImageTextureTarget(gfx::BufferFormat format,
+                                                   gfx::BufferUsage usage) {
+  return GL_TEXTURE_2D;
+}
+
+cc::SharedBitmapManager* StubContextFactory::GetSharedBitmapManager() {
+  return nullptr;
+}
+
+gpu::GpuMemoryBufferManager* StubContextFactory::GetGpuMemoryBufferManager() {
+  return nullptr;
+}
+
+cc::TaskGraphRunner* StubContextFactory::GetTaskGraphRunner() {
+  return task_graph_runner_.get();
+}
+
+scoped_ptr<cc::SurfaceIdAllocator>
+StubContextFactory::CreateSurfaceIdAllocator() {
+  return make_scoped_ptr(
+      new cc::SurfaceIdAllocator(next_surface_id_namespace_++));
+}
+
+void StubContextFactory::ResizeDisplay(ui::Compositor* compositor,
+                                       const gfx::Size& size) {}
+
+}  // namespace sysui
+}  // namespace ash