Support touch scroll gestures in menus.

views/controls/menu/menu_controller.cc

 // Copyright (c) 2011 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 "views/controls/menu/menu_controller.h"
 
 #include "base/i18n/case_conversion.h"
 #include "base/i18n/rtl.h"
 #include "base/time.h"
 #include "base/utf_string_conversions.h"
@@ skipping 592 matching lines @@
   // MouseEntered is always followed by a mouse moved, so don't need to
   // do anything here.
 }
 
 #if defined(OS_LINUX)
 bool MenuController::OnMouseWheel(SubmenuView* source,
                                   const MouseWheelEvent& event) {
   MenuPart part = GetMenuPart(source, event.location());
   return part.submenu && part.submenu->OnMouseWheel(event);
 }
+
+ui::GestureStatus MenuController::OnGestureEvent(SubmenuView* source,
+                                    const GestureEvent& event) {
+  MenuPart part = GetMenuPart(source, event.location());
+  if (!part.submenu)
+    return ui::GESTURE_STATUS_UNKNOWN;
+  return part.submenu->OnGestureEvent(event);
+}
 #endif
 
 bool MenuController::GetDropFormats(
       SubmenuView* source,
       int* formats,
       std::set<OSExchangeData::CustomFormat>* custom_formats) {
   return source->GetMenuItem()->GetDelegate()->GetDropFormats(
       source->GetMenuItem(), formats, custom_formats);
 }
 
@@ skipping 1332 matching lines @@
     return;
 
   // Reset the active_mouse_view_ before sending mouse capture lost. That way if
   // it calls back to us, we aren't in a weird state.
   View* active_view = active_mouse_view_;
   active_mouse_view_ = NULL;
   active_view->OnMouseCaptureLost();
 }
 
 }  // namespace views