Allow gaming_seat to use ozone gamepad as back-end

components/exo/gaming_seat_joydev.h

Index: components/exo/gaming_seat_joydev.h
diff --git a/components/exo/gaming_seat.h b/components/exo/gaming_seat_joydev.h
similarity index 71%
copy from components/exo/gaming_seat.h
copy to components/exo/gaming_seat_joydev.h
index 40e44ae33352eeb4cf86c473177ce37d6e52c548..fde65a05ed3212197677982c7e42b99487e7b941 100644
--- a/components/exo/gaming_seat.h
+++ b/components/exo/gaming_seat_joydev.h
@@ -2,8 +2,8 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#ifndef COMPONENTS_EXO_GAMING_SEAT_H_
-#define COMPONENTS_EXO_GAMING_SEAT_H_
+#ifndef COMPONENTS_EXO_GAMING_SEAT_JOYDEV_H_
+#define COMPONENTS_EXO_GAMING_SEAT_JOYDEV_H_
 
 #include <memory>
 
@@ -13,6 +13,7 @@
 #include "base/synchronization/lock.h"
 #include "base/threading/thread.h"
 #include "base/threading/thread_task_runner_handle.h"
+#include "components/exo/gaming_seat.h"
 #include "components/exo/wm_helper.h"
 #include "device/gamepad/gamepad_data_fetcher.h"
 #include "ui/aura/client/focus_change_observer.h"
@@ -26,21 +27,21 @@ using CreateGamepadDataFetcherCallback =
 
 // This class represents one gaming seat, it uses a background thread
 // for polling gamepad devices and notifies the corresponding GampadDelegate of
-// any changes.
-class GamingSeat : public WMHelper::FocusObserver {
+// any changes. This gaming seat read gamepad events from joydev interface.
+class GamingSeatJoydev : public GamingSeat {
  public:
   // This class will post tasks to invoke the delegate on the thread runner
   // which is associated with the thread that is creating this instance.
-  GamingSeat(GamingSeatDelegate* gaming_seat_delegate,
-             base::SingleThreadTaskRunner* polling_task_runner);
+  GamingSeatJoydev(GamingSeatDelegate* gaming_seat_delegate,
+                   base::SingleThreadTaskRunner* polling_task_runner);
 
   // Allows test cases to specify a CreateGamepadDataFetcherCallback that
   // overrides the default GamepadPlatformDataFetcher.
-  GamingSeat(GamingSeatDelegate* gaming_seat_delegate,
-             base::SingleThreadTaskRunner* polling_task_runner,
-             CreateGamepadDataFetcherCallback create_fetcher_callback);
+  GamingSeatJoydev(GamingSeatDelegate* gaming_seat_delegate,
+                   base::SingleThreadTaskRunner* polling_task_runner,
+                   CreateGamepadDataFetcherCallback create_fetcher_callback);
 
-  ~GamingSeat() override;
+  ~GamingSeatJoydev() override;
 
   // Overridden WMHelper::FocusObserver:
   void OnWindowFocused(aura::Window* gained_focus,
@@ -66,13 +67,13 @@ class GamingSeat : public WMHelper::FocusObserver {
   device::Gamepads pad_state_;
 
   // ThreadChecker for the origin thread.
-  base::ThreadChecker thread_checker_;
+  THREAD_CHECKER(thread_checker_);
 
-  base::WeakPtrFactory<GamingSeat> weak_ptr_factory_;
+  base::WeakPtrFactory<GamingSeatJoydev> weak_ptr_factory_;
 
-  DISALLOW_COPY_AND_ASSIGN(GamingSeat);
+  DISALLOW_COPY_AND_ASSIGN(GamingSeatJoydev);
 };
 
 }  // namespace exo
 
-#endif  // COMPONENTS_EXO_GAMING_SEAT_H_
+#endif  // COMPONENTS_EXO_GAMING_SEAT_JOYDEV_H_