Mus: Implement GpuMain mojo interface

services/ui/surfaces/display_compositor_factory.h

+// 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_FACTORY_H_
+#define SERVICES_UI_SURFACES_DISPLAY_COMPOSITOR_FACTORY_H_
+
+#include "base/threading/thread.h"
+#include "base/threading/thread_checker.h"
+#include "cc/ipc/display_compositor.mojom.h"
+#include "mojo/public/cpp/bindings/binding.h"
+#include "services/ui/surfaces/display_compositor.h"
+
+namespace gpu {
+class ImageFactory;
+}
+
+namespace ui {
+
+class DisplayCompositorFactoryDelegate;
+
+// A DisplayCompositorFactory permits the display compositor to request a
+// DisplayCompositor interface while providing a DisplayCompositorClient
+// interface.
+class DisplayCompositorFactory : public cc::mojom::DisplayCompositorFactory {
+ public:
+  DisplayCompositorFactory(
+      DisplayCompositorFactoryDelegate* delegate,
+      scoped_refptr<gpu::InProcessCommandBuffer::Service> gpu_command_service,
+      scoped_refptr<base::SingleThreadTaskRunner> compositor_runner,
+      gpu::ImageFactory* image_factory,
+      cc::mojom::DisplayCompositorFactoryRequest request);
+
+  ~DisplayCompositorFactory() override;
+
+  // cc::mojom::DisplayCompositorFactory implementation.
+  void CreateDisplayCompositor(
+      cc::mojom::DisplayCompositorRequest display_compositor_request,
+      cc::mojom::DisplayCompositorClientPtr display_compositor_client) override;
+
+ private:
+  DisplayCompositorFactoryDelegate* const delegate_;
+
+  scoped_refptr<base::SingleThreadTaskRunner> compositor_runner_;
+
+  gpu::ImageFactory* image_factory_;
+
+  scoped_refptr<gpu::InProcessCommandBuffer::Service> gpu_command_service_;
+
+  std::unique_ptr<DisplayCompositor> display_compositor_;
+
+  // Used for DCHECKs to ensure methods are executed on the correct thread.
+  base::ThreadChecker thread_checker_;
+
+  mojo::Binding<cc::mojom::DisplayCompositorFactory> binding_;
+};
+
+}  // namespace ui
+
+#endif  // SERVICES_UI_SURFACES_DISPLAY_COMPOSITOR_FACTORY_H_