events: Get rid of GestureStatus in favour of EventResult.

ash/wm/system_modal_container_event_filter.cc

Index: ash/wm/system_modal_container_event_filter.cc
diff --git a/ash/wm/system_modal_container_event_filter.cc b/ash/wm/system_modal_container_event_filter.cc
index 33c3571919df5542de9b444e702a16347bc40981..fb7f3e6ceaef30f90051f582dd90bd2a2127c62d 100644
--- a/ash/wm/system_modal_container_event_filter.cc
+++ b/ash/wm/system_modal_container_event_filter.cc
@@ -37,11 +37,11 @@ ui::TouchStatus SystemModalContainerEventFilter::PreHandleTouchEvent(
   return ui::TOUCH_STATUS_UNKNOWN;
 }
 
-ui::GestureStatus SystemModalContainerEventFilter::PreHandleGestureEvent(
+ui::EventResult SystemModalContainerEventFilter::PreHandleGestureEvent(
     aura::Window* target,
     ui::GestureEvent* event) {
   // TODO(sad):
-  return ui::GESTURE_STATUS_UNKNOWN;
+  return ui::ER_UNHANDLED;
 }
 
 }  // namespace internal