Remove GestureInterpreterLibevdevCros::SetAllowedKeys() because it is a no-op

ui/events/ozone/evdev/libgestures_glue/gesture_interpreter_libevdev_cros.h

Index: ui/events/ozone/evdev/libgestures_glue/gesture_interpreter_libevdev_cros.h
diff --git a/ui/events/ozone/evdev/libgestures_glue/gesture_interpreter_libevdev_cros.h b/ui/events/ozone/evdev/libgestures_glue/gesture_interpreter_libevdev_cros.h
index 559828bd6cf4158e6cd83f55eef48077fe4f7a1a..f47ec1ad47cb0eaaf45becc4bc8f618b0c808cba 100644
--- a/ui/events/ozone/evdev/libgestures_glue/gesture_interpreter_libevdev_cros.h
+++ b/ui/events/ozone/evdev/libgestures_glue/gesture_interpreter_libevdev_cros.h
@@ -53,9 +53,6 @@ class EVENTS_OZONE_EVDEV_EXPORT GestureInterpreterLibevdevCros
                            EventStateRec* evstate,
                            const timeval& time) override;
   void OnLibEvdevCrosStopped(Evdev* evdev, EventStateRec* state) override;
-  void SetAllowedKeys(
-      scoped_ptr<std::set<DomCode>> allowed_keys) override;
-  void AllowAllKeys() override;
 
   // Handler for gesture events generated from libgestures.
   void OnGestureReady(const Gesture* gesture);
@@ -93,10 +90,6 @@ class EVENTS_OZONE_EVDEV_EXPORT GestureInterpreterLibevdevCros
   // and multi-touch mice.
   bool is_mouse_;
 
-  // The evdev codes of the keys which should be processed. nullptr if all keys
-  // should be processed.
-  scoped_ptr<std::set<int>> allowed_keys_;
-
   // Shared cursor state.
   CursorDelegateEvdev* cursor_;