Add left/right layout support for uber tray.

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 "base/base_export.h"
 #include "base/timer.h"
 #include "ui/views/bubble/bubble_delegate.h"
 #include "ui/views/widget/widget.h"
 
 #include <vector>
 
 namespace ash {
 
 class SystemTray;
 class SystemTrayItem;
 
 namespace internal {
 
 class SystemTrayBubble;
 
 class SystemTrayBubbleView : public views::BubbleDelegateView {
  public:
   SystemTrayBubbleView(views::View* anchor,
+                       views::BubbleBorder::ArrowLocation arrow_location,
                        SystemTrayBubble* host,
                        bool can_activate);
   virtual ~SystemTrayBubbleView();
 
   void SetBubbleBorder(views::BubbleBorder* border);
 
   void UpdateAnchor();
 
   // Called when the host is destroyed.
   void reset_host() { host_ = NULL; }
@@ skipping 79 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_