events: Get rid of GestureStatus in favour of EventResult.

ui/aura/event_filter.cc

Index: ui/aura/event_filter.cc
diff --git a/ui/aura/event_filter.cc b/ui/aura/event_filter.cc
index 1a6fbacd91a47e324e63ff23a9536d20b577e42f..9f2c35745a3d56d7d6a8c85d2d8a78bf08b654a8 100644
--- a/ui/aura/event_filter.cc
+++ b/ui/aura/event_filter.cc
@@ -21,9 +21,9 @@ ui::TouchStatus EventFilter::PreHandleTouchEvent(Window* target,
   return ui::TOUCH_STATUS_UNKNOWN;
 }
 
-ui::GestureStatus EventFilter::PreHandleGestureEvent(Window* target,
-                                                     ui::GestureEvent* event) {
-  return ui::GESTURE_STATUS_UNKNOWN;
+ui::EventResult EventFilter::PreHandleGestureEvent(Window* target,
+                                                   ui::GestureEvent* event) {
+  return ui::ER_UNHANDLED;
 }
 
 ui::EventResult EventFilter::OnKeyEvent(ui::EventTarget* target,
@@ -50,8 +50,7 @@ ui::TouchStatus EventFilter::OnTouchEvent(ui::EventTarget* target,
 
 ui::EventResult EventFilter::OnGestureEvent(ui::EventTarget* target,
                                             ui::GestureEvent* event) {
-  return PreHandleGestureEvent(static_cast<Window*>(target), event) ==
-      ui::GESTURE_STATUS_CONSUMED ? ui::ER_CONSUMED : ui::ER_UNHANDLED;
+  return PreHandleGestureEvent(static_cast<Window*>(target), event);
 }
 
 }  // namespace aura