events: Get rid of GestureStatus in favour of EventResult.

ui/views/controls/scrollbar/native_scroll_bar.cc

Index: ui/views/controls/scrollbar/native_scroll_bar.cc
diff --git a/ui/views/controls/scrollbar/native_scroll_bar.cc b/ui/views/controls/scrollbar/native_scroll_bar.cc
index 8b08a861eeaa4584f832fc34351e6284d4561615..0ed04d7964013ff0a5fb8c93618681e69ffc69f5 100644
--- a/ui/views/controls/scrollbar/native_scroll_bar.cc
+++ b/ui/views/controls/scrollbar/native_scroll_bar.cc
@@ -76,10 +76,10 @@ bool NativeScrollBar::OnKeyPressed(const ui::KeyEvent& event) {
   return native_wrapper_->GetView()->OnKeyPressed(event);
 }
 
-ui::GestureStatus NativeScrollBar::OnGestureEvent(
+ui::EventResult NativeScrollBar::OnGestureEvent(
     const ui::GestureEvent& event) {
   if (!native_wrapper_)
-    return ui::GESTURE_STATUS_UNKNOWN;
+    return ui::ER_UNHANDLED;
   return native_wrapper_->GetView()->OnGestureEvent(event);
 }