drm: GPU process manages VGEM fd.

ui/ozone/platform/drm/host/drm_display_host_manager.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_DRM_HOST_DRM_DISPLAY_HOST_MANAGER_H_
 #define UI_OZONE_PLATFORM_DRM_HOST_DRM_DISPLAY_HOST_MANAGER_H_
 
 #include <map>
 #include <queue>
 
@@ skipping 52 matching lines @@
       scoped_refptr<base::SingleThreadTaskRunner> send_runner,
       const base::Callback<void(IPC::Message*)>& send_callback) override;
   void OnChannelDestroyed(int host_id) override;
 
   // IPC::Listener overrides:
   bool OnMessageReceived(const IPC::Message& message) override;
 
  private:
   struct DisplayEvent {
     DisplayEvent(DeviceEvent::ActionType action_type,
-                 const base::FilePath& path)
-        : action_type(action_type), path(path) {}
+                 const base::FilePath& path,
+                 bool is_vgem)
+        : action_type(action_type), path(path), is_vgem(is_vgem) {}
 
     DeviceEvent::ActionType action_type;
     base::FilePath path;
+    bool is_vgem;
   };
 
   void OnUpdateNativeDisplays(
       const std::vector<DisplaySnapshot_Params>& displays);
   void OnDisplayConfigured(int64_t display_id, bool status);
 
   void ProcessEvent();
 
   // Called as a result of finishing to process the display hotplug event. These
   // are responsible for dequing the event and scheduling the next event.
@@ skipping 48 matching lines @@
       drm_devices_;
 
   base::WeakPtrFactory<DrmDisplayHostManager> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(DrmDisplayHostManager);
 };
 
 }  // namespace ui
 
 #endif  // UI_OZONE_PLATFORM_DRM_HOST_DRM_DISPLAY_HOST_MANAGER_H_