Makes Chrome's app menu have a vertical orientation.

ui/views/controls/menu/menu_scroll_view_container.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/views/controls/menu/menu_scroll_view_container.h"
 
 #include "base/macros.h"
 #include "base/memory/ptr_util.h"
 #include "third_party/skia/include/core/SkPaint.h"
 #include "third_party/skia/include/core/SkPath.h"
@@ skipping 242 matching lines @@
   const MenuConfig& menu_config = MenuConfig::instance();
   extra.menu_background.corner_radius = menu_config.corner_radius;
   GetNativeTheme()->Paint(canvas->sk_canvas(),
       NativeTheme::kMenuPopupBackground, NativeTheme::kNormal, bounds, extra);
 }
 
 void MenuScrollViewContainer::GetAccessibleState(
     ui::AXViewState* state) {
   // Get the name from the submenu view.
   content_view_->GetAccessibleState(state);
-
-  // Now change the role.
   state->role = ui::AX_ROLE_MENU_BAR;
 }
 
 void MenuScrollViewContainer::OnBoundsChanged(
     const gfx::Rect& previous_bounds) {
   gfx::Size content_pref = scroll_view_->GetContents()->GetPreferredSize();
   scroll_up_button_->SetVisible(content_pref.height() > height());
   scroll_down_button_->SetVisible(content_pref.height() > height());
   Layout();
 }
@@ skipping 45 matching lines @@
     case MENU_ANCHOR_BUBBLE_ABOVE:
       return BubbleBorder::BOTTOM_CENTER;
     case MENU_ANCHOR_BUBBLE_BELOW:
       return BubbleBorder::TOP_CENTER;
     default:
       return BubbleBorder::NONE;
   }
 }
 
 }  // namespace views