Index: ui/events/devices/input_device_event_observer.h |
diff --git a/ui/events/devices/input_device_event_observer.h b/ui/events/devices/input_device_event_observer.h |
index 707fea2095d6cf2d40675aba9cfcd4d5500716dc..4a2d55399e6e20304d70dfe9de79ea21aec58b33 100644 |
--- a/ui/events/devices/input_device_event_observer.h |
+++ b/ui/events/devices/input_device_event_observer.h |
@@ -14,10 +14,13 @@ class EVENTS_DEVICES_EXPORT InputDeviceEventObserver { |
public: |
virtual ~InputDeviceEventObserver() {} |
- virtual void OnKeyboardDeviceConfigurationChanged() = 0; |
- virtual void OnTouchscreenDeviceConfigurationChanged() = 0; |
- virtual void OnMouseDeviceConfigurationChanged() = 0; |
- virtual void OnTouchpadDeviceConfigurationChanged() = 0; |
+ virtual void OnKeyboardDeviceConfigurationChanged() {} |
+ virtual void OnTouchscreenDeviceConfigurationChanged() {} |
+ virtual void OnMouseDeviceConfigurationChanged() {} |
+ virtual void OnTouchpadDeviceConfigurationChanged() {} |
+ |
+ protected: |
+ InputDeviceEventObserver() {} |
}; |
} // namespace ui |