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

ui/ozone/platform/drm/host/drm_native_display_delegate.h

Index: ui/ozone/platform/drm/host/drm_native_display_delegate.h
diff --git a/ui/ozone/platform/drm/host/drm_native_display_delegate.h b/ui/ozone/platform/drm/host/drm_native_display_delegate.h
index b922e33c662d68be769fb2f6e444af89c8304a60..a6844ba81d3356aa742897449eeac45431755b4a 100644
--- a/ui/ozone/platform/drm/host/drm_native_display_delegate.h
+++ b/ui/ozone/platform/drm/host/drm_native_display_delegate.h
@@ -6,12 +6,11 @@
 #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"
@@ -23,6 +22,7 @@ namespace ui {
 
 class DeviceManager;
 class DisplayManager;
+class DrmDeviceHandle;
 class DrmGpuPlatformSupportHost;
 
 struct DisplaySnapshot_Params;
@@ -82,7 +82,7 @@ class DrmNativeDisplayDelegate : public NativeDisplayDelegate,
 
   // 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);
 
@@ -110,7 +110,7 @@ class DrmNativeDisplayDelegate : public NativeDisplayDelegate,
   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_;