ui: Remove TouchStatus in favour of EventResult.

ash/tooltips/tooltip_controller.cc

Index: ash/tooltips/tooltip_controller.cc
diff --git a/ash/tooltips/tooltip_controller.cc b/ash/tooltips/tooltip_controller.cc
index 0449645587b1b1512a4e45a56bfc486c5ceaae1c..b8a9151b768dc480597239f19cb9f57309ab4695 100644
--- a/ash/tooltips/tooltip_controller.cc
+++ b/ash/tooltips/tooltip_controller.cc
@@ -292,7 +292,7 @@ bool TooltipController::PreHandleMouseEvent(aura::Window* target,
   return false;
 }
 
-ui::TouchStatus TooltipController::PreHandleTouchEvent(
+ui::EventResult TooltipController::PreHandleTouchEvent(
     aura::Window* target,
     ui::TouchEvent* event) {
   // TODO(varunjain): need to properly implement tooltips for
@@ -303,7 +303,7 @@ ui::TouchStatus TooltipController::PreHandleTouchEvent(
   if (tooltip_window_)
     tooltip_window_->RemoveObserver(this);
   tooltip_window_ = NULL;
-  return ui::TOUCH_STATUS_UNKNOWN;
+  return ui::ER_UNHANDLED;
 }
 
 ui::EventResult TooltipController::PreHandleGestureEvent(