ui: Remove TouchStatus in favour of EventResult.

ash/wm/system_gesture_event_filter.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "ash/wm/system_gesture_event_filter.h"
 
 #include "ash/accelerators/accelerator_controller.h"
 #include "ash/accelerators/accelerator_table.h"
 #include "ash/ash_switches.h"
 #include "ash/root_window_controller.h"
@@ skipping 54 matching lines @@
   if (event->type() == ui::ET_MOUSE_PRESSED && event->native_event() &&
       ui::TouchFactory::GetInstance()->IsTouchDevicePresent() &&
       Shell::GetInstance()->delegate()) {
     Shell::GetInstance()->delegate()->RecordUserMetricsAction(
       UMA_MOUSE_DOWN);
   }
 #endif
   return false;
 }
 
-ui::TouchStatus SystemGestureEventFilter::PreHandleTouchEvent(
+ui::EventResult SystemGestureEventFilter::PreHandleTouchEvent(
     aura::Window* target,
     ui::TouchEvent* event) {
   touch_uma_.RecordTouchEvent(target, *event);
   long_press_affordance_->ProcessEvent(target, event, event->touch_id());
-  return ui::TOUCH_STATUS_UNKNOWN;
+  return ui::ER_UNHANDLED;
 }
 
 ui::EventResult SystemGestureEventFilter::PreHandleGestureEvent(
     aura::Window* target,
     ui::GestureEvent* event) {
   touch_uma_.RecordGestureEvent(target, *event);
   long_press_affordance_->ProcessEvent(target, event,
       event->GetLowestTouchId());
 
   if (!target || target == target->GetRootWindow()) {
@@ skipping 71 matching lines @@
   if (find == pinch_handlers_.end()) {
     // The handler may have already been removed.
     return;
   }
   delete (*find).second;
   pinch_handlers_.erase(find);
   window->RemoveObserver(this);
 }
 }  // namespace internal
 }  // namespace ash