events: Get rid of GestureStatus in favour of EventResult.

ui/aura/window_delegate.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 "ui/aura/window_delegate.h"
 
 namespace aura {
 
 ui::EventResult WindowDelegate::OnKeyEvent(ui::EventTarget* target,
                                            ui::KeyEvent* event) {
@@ skipping 10 matching lines @@
   return ui::ER_UNHANDLED;
 }
 
 ui::TouchStatus WindowDelegate::OnTouchEvent(ui::EventTarget* target,
                                              ui::TouchEvent* event) {
   return ui::TOUCH_STATUS_UNKNOWN;
 }
 
 ui::EventResult WindowDelegate::OnGestureEvent(ui::EventTarget* target,
                                                ui::GestureEvent* event) {
-  return OnGestureEvent(event) == ui::GESTURE_STATUS_CONSUMED ?
-      ui::ER_CONSUMED : ui::ER_UNHANDLED;
+  return OnGestureEvent(event);
 }
 
 }  // namespace aura