ozone: evdev: Add gesture property provider

ui/events/ozone/evdev/event_factory_evdev.h

Index: ui/events/ozone/evdev/event_factory_evdev.h
diff --git a/ui/events/ozone/evdev/event_factory_evdev.h b/ui/events/ozone/evdev/event_factory_evdev.h
index c1998a612a52fdd9abc1a5fc6cc700f54e2a563b..1812f190009957b5674f4ce30ef3586926cd2e72 100644
--- a/ui/events/ozone/evdev/event_factory_evdev.h
+++ b/ui/events/ozone/evdev/event_factory_evdev.h
@@ -27,6 +27,10 @@ namespace ui {
 class CursorDelegateEvdev;
 class DeviceManager;
 
+#if defined(USE_EVDEV_GESTURES)
+class GesturePropertyProvider;
+#endif
+
 // Ozone events implementation for the Linux input subsystem ("evdev").
 class EVENTS_OZONE_EVDEV_EXPORT EventFactoryEvdev : public DeviceEventObserver,
                                                     public PlatformEventSource {
@@ -83,6 +87,11 @@ class EVENTS_OZONE_EVDEV_EXPORT EventFactoryEvdev : public DeviceEventObserver,
   // Cursor movement.
   CursorDelegateEvdev* cursor_;
 
+#if defined(USE_EVDEV_GESTURES)
+  // Gesture library property provider (used by touchpads/mice).
+  scoped_ptr<GesturePropertyProvider> gesture_property_provider_;
+#endif
+
   // Support weak pointers for attach & detach callbacks.
   base::WeakPtrFactory<EventFactoryEvdev> weak_ptr_factory_;