aura: Gesture event plumbing (skeleton).

ash/app_list/app_list.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/app_list/app_list.h"
 
 #include "ash/app_list/app_list_model.h"
 #include "ash/app_list/app_list_view.h"
 #include "ash/ash_switches.h"
 #include "ash/shell_delegate.h"
@@ skipping 131 matching lines @@
       SetVisible(false);
   }
   return false;
 }
 
 ui::TouchStatus AppList::PreHandleTouchEvent(aura::Window* target,
                                              aura::TouchEvent* event) {
   return ui::TOUCH_STATUS_UNKNOWN;
 }
 
+ui::GestureStatus AppList::PreHandleGestureEvent(
+    aura::Window* target,
+    aura::GestureEvent* event) {
+  return ui::GESTURE_STATUS_UNKNOWN;
+}
+
 ////////////////////////////////////////////////////////////////////////////////
 // AppList, ui::LayerAnimationObserver implementation:
 
 void AppList::OnLayerAnimationEnded(
     const ui::LayerAnimationSequence* sequence) {
   if (!is_visible_ )
     widget_->Close();
 }
 
 void AppList::OnLayerAnimationAborted(
@@ skipping 15 matching lines @@
 }
 
 void AppList::OnWidgetActivationChanged(views::Widget* widget, bool active) {
   DCHECK(widget_ == widget);
   if (widget_ && is_visible_ && !active)
     SetVisible(false);
 }
 
 }  // namespace internal
 }  // namespace ash