[4/4][Ozone-Drm] Keep track of DRM devices in browser process

ui/ozone/platform/drm/host/drm_native_display_delegate.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_NATIVE_DISPLAY_DELEGATE_HOST_H_
 #define UI_OZONE_PLATFORM_DRM_HOST_NATIVE_DISPLAY_DELEGATE_HOST_H_
 
 #include <map>
-#include <set>
 
+#include "base/containers/scoped_ptr_hash_map.h"
 #include "base/files/file.h"
 #include "base/files/file_path.h"
 #include "base/macros.h"
-#include "base/memory/ref_counted.h"
 #include "base/memory/scoped_vector.h"
 #include "base/observer_list.h"
 #include "ui/display/types/native_display_delegate.h"
 #include "ui/events/ozone/device/device_event_observer.h"
 #include "ui/ozone/platform/drm/host/sequenced_scheduler.h"
 #include "ui/ozone/public/gpu_platform_support_host.h"
 
 namespace ui {
 
 class DeviceManager;
 class DisplayManager;
+class DrmDeviceHandle;
 class DrmGpuPlatformSupportHost;
 
 struct DisplaySnapshot_Params;
 
 class DrmNativeDisplayDelegate : public NativeDisplayDelegate,
                                  public DeviceEventObserver,
                                  public GpuPlatformSupportHost {
  public:
   DrmNativeDisplayDelegate(DrmGpuPlatformSupportHost* proxy,
                            DeviceManager* device_manager,
@@ skipping 39 matching lines @@
   // IPC::Listener overrides:
   bool OnMessageReceived(const IPC::Message& message) override;
 
  private:
   void OnUpdateNativeDisplays(
       const std::vector<DisplaySnapshot_Params>& displays);
   void OnDisplayConfigured(int64_t display_id, bool status);
 
   // Called as a result of finishing to process the display hotplug event. These
   // are responsible for dequing the event and scheduling the next event.
-  void OnAddGraphicsDevice(const base::FilePath& path, base::File file);
+  void OnAddGraphicsDevice(const base::FilePath& path);
   void OnUpdateGraphicsDevice();
   void OnRemoveGraphicsDevice(const base::FilePath& path);
 
   void RunUpdateDisplaysCallback(const GetDisplaysCallback& callback) const;
 
   DrmGpuPlatformSupportHost* proxy_;  // Not owned.
   DeviceManager* device_manager_;     // Not owned.
   DisplayManager* display_manager_;   // Not owned.
 
   // File path for the primary graphics card which is opened by default in the
   // GPU process. We'll avoid opening this in hotplug events since it will race
   // with the GPU process trying to open it and aquire DRM master.
   const base::FilePath primary_graphics_card_path_;
 
   // Keeps track if there is a dummy display. This happens on initialization
   // when there is no connection to the GPU to update the displays.
   bool has_dummy_display_;
 
   ScopedVector<DisplaySnapshot> displays_;
   ObserverList<NativeDisplayObserver> observers_;
 
   GetDisplaysCallback get_displays_callback_;
 
   // Map between display_id and the configuration callback.
   std::map<int64_t, ConfigureCallback> configure_callback_map_;
 
   // Keeps track of all the active DRM devices.
-  std::set<base::FilePath> drm_devices_;
+  base::ScopedPtrHashMap<base::FilePath, DrmDeviceHandle> drm_devices_;
 
   // Used to asynchronously process display hotplug events in the correct order.
   SequencedScheduler scheduler_;
 
   base::WeakPtrFactory<DrmNativeDisplayDelegate> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(DrmNativeDisplayDelegate);
 };
 
 }  // namespace ui
 
 #endif  // UI_OZONE_PLATFORM_DRM_HOST_NATIVE_DISPLAY_DELEGATE_HOST_H_