services/ui: Split GpuServiceInternal into gpu vs. ws pieces.

services/ui/gpu/gpu_service_internal.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_GPU_GPU_SERVICE_INTERNAL_H_
 #define SERVICES_UI_GPU_GPU_SERVICE_INTERNAL_H_
 
 #include "base/callback.h"
 #include "base/synchronization/waitable_event.h"
 #include "base/threading/non_thread_safe.h"
 #include "base/threading/thread.h"
 #include "build/build_config.h"
 #include "gpu/command_buffer/service/gpu_preferences.h"
 #include "gpu/config/gpu_info.h"
-#include "gpu/ipc/client/gpu_channel_host.h"
 #include "gpu/ipc/common/surface_handle.h"
 #include "gpu/ipc/service/gpu_channel.h"
 #include "gpu/ipc/service/gpu_channel_manager.h"
 #include "gpu/ipc/service/gpu_channel_manager_delegate.h"
 #include "gpu/ipc/service/gpu_config.h"
 #include "gpu/ipc/service/x_util.h"
 #include "mojo/public/cpp/bindings/strong_binding.h"
 #include "services/ui/gpu/interfaces/gpu_service_internal.mojom.h"
 #include "ui/gfx/native_widget_types.h"
 
 namespace base {
 template <typename T>
 struct DefaultSingletonTraits;
 }
 
 namespace gpu {
 class GpuChannelHost;
 class GpuMemoryBufferFactory;
 class SyncPointManager;
 }
 
 namespace media {
 class MediaService;
 }
 
 namespace ui {
 
-class MusGpuMemoryBufferManager;
-
-// TODO(sad): GpuChannelManagerDelegate implementation should be in the gpu
-// process, and the GpuChannelHostFactory should be in the host process (i.e.
-// the window-server process). So the GpuChannelHostFactory parts of this should
-// be split out.
+// This runs in the GPU process, and communicates with the gpu host (which is
+// the window server) over the mojom APIs. This is responsible for setting up
+// the connection to clients, allocating/free'ing gpu memory etc.
 class GpuServiceInternal : public gpu::GpuChannelManagerDelegate,
-                           public gpu::GpuChannelHostFactory,
                            public mojom::GpuServiceInternal,
                            public base::NonThreadSafe {
  public:
   void Add(mojom::GpuServiceInternalRequest request);
 
   // TODO(sad): This should not be a singleton.
   static GpuServiceInternal* GetInstance();
 
-  scoped_refptr<gpu::GpuChannelHost> gpu_channel_local() const {
-    return gpu_channel_local_;
-  }
-
   gpu::GpuChannelManager* gpu_channel_manager() const {
     return gpu_channel_manager_.get();
   }
 
   gpu::GpuMemoryBufferFactory* gpu_memory_buffer_factory() const {
     return gpu_memory_buffer_factory_.get();
   }
 
+  // TODO(sad): These should be mojom API.
+  gfx::GpuMemoryBufferHandle CreateGpuMemoryBuffer(
+      gfx::GpuMemoryBufferId id,
+      const gfx::Size& size,
+      gfx::BufferFormat format,
+      gfx::BufferUsage usage,
+      int client_id,
+      gpu::SurfaceHandle surface_handle);
+  void DestroyGpuMemoryBuffer(gfx::GpuMemoryBufferId id,
+                              int client_id,
+                              const gpu::SyncToken& sync_token);
+
  private:
   friend struct base::DefaultSingletonTraits<GpuServiceInternal>;
 
   GpuServiceInternal();
   ~GpuServiceInternal() override;
 
   void EstablishGpuChannelInternal(int32_t client_id,
                                    uint64_t client_tracing_id,
                                    bool preempts,
                                    bool allow_view_command_buffers,
                                    bool allow_real_time_streams,
                                    const EstablishGpuChannelCallback& callback);
-  gfx::GpuMemoryBufferHandle CreateGpuMemoryBuffer(
-      gfx::GpuMemoryBufferId id,
-      const gfx::Size& size,
-      gfx::BufferFormat format,
-      gfx::BufferUsage usage,
-      int client_id,
-      gpu::SurfaceHandle surface_handle);
   gfx::GpuMemoryBufferHandle CreateGpuMemoryBufferFromeHandle(
       gfx::GpuMemoryBufferHandle buffer_handle,
       gfx::GpuMemoryBufferId id,
       const gfx::Size& size,
       gfx::BufferFormat format,
       int client_id);
-  void DestroyGpuMemoryBuffer(gfx::GpuMemoryBufferId id,
-                              int client_id,
-                              const gpu::SyncToken& sync_token);
 
   // gpu::GpuChannelManagerDelegate:
   void DidCreateOffscreenContext(const GURL& active_url) override;
   void DidDestroyChannel(int client_id) override;
   void DidDestroyOffscreenContext(const GURL& active_url) override;
   void DidLoseContext(bool offscreen,
                       gpu::error::ContextLostReason reason,
                       const GURL& active_url) override;
   void GpuMemoryUmaStats(const gpu::GPUMemoryUmaStats& params) override;
   void StoreShaderToDisk(int client_id,
                          const std::string& key,
                          const std::string& shader) override;
 #if defined(OS_WIN)
   void SendAcceleratedSurfaceCreatedChildWindow(
       gpu::SurfaceHandle parent_window,
       gpu::SurfaceHandle child_window) override;
 #endif
   void SetActiveURL(const GURL& url) override;
 
-  // gpu::GpuChannelHostFactory:
-  bool IsMainThread() override;
-  scoped_refptr<base::SingleThreadTaskRunner> GetIOThreadTaskRunner() override;
-  std::unique_ptr<base::SharedMemory> AllocateSharedMemory(
-      size_t size) override;
-
   // mojom::GpuServiceInternal:
   void Initialize(const InitializeCallback& callback) override;
   void EstablishGpuChannel(
       int32_t client_id,
       uint64_t client_tracing_id,
+      bool is_gpu_host,
       const EstablishGpuChannelCallback& callback) override;
 
-  void InitializeOnGpuThread(mojo::ScopedMessagePipeHandle* channel_handle,
-                             base::WaitableEvent* event);
+  void InitializeOnGpuThread(base::WaitableEvent* event);
   void EstablishGpuChannelOnGpuThread(
       int client_id,
       uint64_t client_tracing_id,
       bool preempts,
       bool allow_view_command_buffers,
       bool allow_real_time_streams,
       mojo::ScopedMessagePipeHandle* channel_handle);
 
   // The main thread task runner.
   scoped_refptr<base::SingleThreadTaskRunner> main_task_runner_;
 
   // An event that will be signalled when we shutdown.
   base::WaitableEvent shutdown_event_;
 
   // The main thread for GpuService.
   base::Thread gpu_thread_;
 
   // The thread that handles IO events for GpuService.
   base::Thread io_thread_;
 
   std::unique_ptr<gpu::SyncPointManager> owned_sync_point_manager_;
 
   std::unique_ptr<gpu::GpuChannelManager> gpu_channel_manager_;
 
   std::unique_ptr<media::MediaService> media_service_;
 
   std::unique_ptr<gpu::GpuMemoryBufferFactory> gpu_memory_buffer_factory_;
 
-  // A GPU memory buffer manager used locally.
-  std::unique_ptr<MusGpuMemoryBufferManager> gpu_memory_buffer_manager_local_;
-
-  // A GPU channel used locally.
-  scoped_refptr<gpu::GpuChannelHost> gpu_channel_local_;
-
   gpu::GpuPreferences gpu_preferences_;
 
   // Information about the GPU, such as device and vendor ID.
   gpu::GPUInfo gpu_info_;
 
   mojo::StrongBinding<mojom::GpuServiceInternal> binding_;
 
   DISALLOW_COPY_AND_ASSIGN(GpuServiceInternal);
 };
 
 }  // namespace ui
 
 #endif  // SERVICES_UI_GPU_GPU_SERVICE_INTERNAL_H_