Show fixed arrow for uber tray bubble if shelf alignment is vertical.

ash/system/tray/system_tray_bubble.h

 // 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.
 
 #ifndef ASH_SYSTEM_TRAY_SYSTEM_TRAY_BUBBLE_H_
 #define ASH_SYSTEM_TRAY_SYSTEM_TRAY_BUBBLE_H_
 #pragma once
 
 #include "ash/system/user/login_status.h"
+#include "ash/wm/shelf_auto_hide_behavior.h"
 #include "base/base_export.h"
 #include "base/message_pump_observer.h"
 #include "base/timer.h"
 #include "ui/views/bubble/bubble_delegate.h"
 #include "ui/views/widget/widget.h"
 
 #include <vector>
 
 namespace ash {
 
@@ skipping 47 matching lines @@
     BUBBLE_TYPE_DETAILED,
     BUBBLE_TYPE_NOTIFICATION
   };
 
   enum AnchorType {
     ANCHOR_TYPE_TRAY,
     ANCHOR_TYPE_BUBBLE
   };
 
   struct InitParams {
-    InitParams(AnchorType anchor_type);
+    InitParams(AnchorType anchor_type, ShelfAlignment shelf_alignmen);
 
     views::View* anchor;
     AnchorType anchor_type;
     bool can_activate;
     ash::user::LoginStatus login_status;
     int arrow_offset;
   };
 
   SystemTrayBubble(ash::SystemTray* tray,
                    const std::vector<ash::SystemTrayItem*>& items,
@@ skipping 41 matching lines @@
   int autoclose_delay_;
   base::OneShotTimer<SystemTrayBubble> autoclose_;
 
   DISALLOW_COPY_AND_ASSIGN(SystemTrayBubble);
 };
 
 }  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_SYSTEM_TRAY_SYSTEM_TRAY_BUBBLE_H_