[8/8][Ozone-Dri] Pass DRM FD to GPU process on hotplug event

ui/ozone/platform/dri/dri_gpu_platform_support.h

 // Copyright 2014 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_OZONE_PLATFORM_DRI_DRI_GPU_PLATFORM_SUPPORT_H_
 #define UI_OZONE_PLATFORM_DRI_DRI_GPU_PLATFORM_SUPPORT_H_
 
+#include <map>
+
 #include "base/containers/scoped_ptr_hash_map.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/scoped_vector.h"
 #include "ipc/message_filter.h"
 #include "ui/gfx/native_widget_types.h"
 #include "ui/ozone/public/gpu_platform_support.h"
 
 class SkBitmap;
 
 namespace base {
+class FileDescriptor;
 class FilePath;
 class SingleThreadTaskRunner;
 }
 
 namespace gfx {
 class Point;
 class Rect;
 }
 
 namespace ui {
 
 class DriSurfaceFactory;
 class DriWindowDelegate;
 class DriWindowDelegateManager;
 class DriWrapper;
+class DriWrapperGenerator;
 class DrmDeviceManager;
 class NativeDisplayDelegateDri;
 class ScreenManager;
 
 struct DisplayMode_Params;
 struct DisplaySnapshot_Params;
 
 class DriGpuPlatformSupport : public GpuPlatformSupport {
  public:
   DriGpuPlatformSupport(const scoped_refptr<DriWrapper>& drm,
                         DrmDeviceManager* drm_device_manager,
                         DriWindowDelegateManager* window_manager,
                         ScreenManager* screen_manager,
-                        scoped_ptr<NativeDisplayDelegateDri> ndd);
+                        scoped_ptr<NativeDisplayDelegateDri> ndd,
+                        scoped_ptr<DriWrapperGenerator> wrapper_generator);
   ~DriGpuPlatformSupport() override;
 
   void AddHandler(scoped_ptr<GpuPlatformSupport> handler);
 
   // GpuPlatformSupport:
   void OnChannelEstablished(IPC::Sender* sender) override;
   void RelinquishGpuResources(const base::Closure& callback) override;
   IPC::MessageFilter* GetMessageFilter() override;
 
   // IPC::Listener:
@@ skipping 12 matching lines @@
 
   // Display related IPC handlers.
   void OnForceDPMSOn();
   void OnRefreshNativeDisplays();
   void OnConfigureNativeDisplay(int64_t id,
                                 const DisplayMode_Params& mode,
                                 const gfx::Point& origin);
   void OnDisableNativeDisplay(int64_t id);
   void OnTakeDisplayControl();
   void OnRelinquishDisplayControl();
-  void OnAddGraphicsDevice(const base::FilePath& path);
+  void OnAddGraphicsDevice(const base::FilePath& path,
+                           const base::FileDescriptor& fd);
   void OnRemoveGraphicsDevice(const base::FilePath& path);
 
   void SetIOTaskRunner(
       const scoped_refptr<base::SingleThreadTaskRunner>& io_task_runner);
 
   IPC::Sender* sender_;                       // Not owned.
-  scoped_refptr<DriWrapper> drm_;
   DrmDeviceManager* drm_device_manager_;      // Not owned.
   DriWindowDelegateManager* window_manager_;  // Not owned.
   ScreenManager* screen_manager_;             // Not owned.
 
+  std::map<base::FilePath, scoped_refptr<DriWrapper>> wrappers_;
   scoped_ptr<NativeDisplayDelegateDri> ndd_;
+  scoped_ptr<DriWrapperGenerator> wrapper_generator_;
   ScopedVector<GpuPlatformSupport> handlers_;
   scoped_refptr<IPC::MessageFilter> filter_;
   scoped_refptr<base::SingleThreadTaskRunner> io_task_runner_;
 };
 
 }  // namespace ui
 
 #endif  // UI_OZONE_PLATFORM_DRI_DRI_GPU_PLATFORM_SUPPORT_H_