Allow Uber Tray popup pointing to the related tray item view.

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"
@@ skipping 50 matching lines @@
     BUBBLE_TYPE_DEFAULT,
     BUBBLE_TYPE_DETAILED,
     BUBBLE_TYPE_NOTIFICATION
   };
 
   enum AnchorType {
     ANCHOR_TYPE_TRAY,
     ANCHOR_TYPE_BUBBLE
   };
 
+  struct InitParams {
+    InitParams(AnchorType anchor_type);
+
+    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,
                    BubbleType bubble_type);
   virtual ~SystemTrayBubble();
 
   // Change the items displayed in the bubble.
   void UpdateView(const std::vector<ash::SystemTrayItem*>& items,
                   BubbleType bubble_type);
 
   // Creates |bubble_view_| and a child views for each member of |items_|.
   // Also creates |bubble_widget_| and sets up animations.
-  void InitView(views::View* anchor,
-                AnchorType anchor_type,
-                bool can_activate,
-                ash::user::LoginStatus login_status);
+  void InitView(const InitParams& init_params);
 
   gfx::Rect GetAnchorRect() const;
 
   BubbleType bubble_type() const { return bubble_type_; }
   SystemTrayBubbleView* bubble_view() const { return bubble_view_; }
 
   void DestroyItemViews();
   void StartAutoCloseTimer(int seconds);
   void StopAutoCloseTimer();
   void RestartAutoCloseTimer();
@@ skipping 15 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_