Add TraySms for SMS messages.

ash/system/tray/system_tray.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_H_
 #define ASH_SYSTEM_TRAY_SYSTEM_TRAY_H_
 #pragma once
 
 #include "ash/launcher/background_animator.h"
 #include "ash/ash_export.h"
@@ skipping 54 matching lines @@
   // Shows details of a particular item. If |close_delay_in_seconds| is
   // non-zero, then the view is automatically closed after the specified time.
   void ShowDetailedView(SystemTrayItem* item,
                         int close_delay_in_seconds,
                         bool activate);
 
   // Continue showing the existing detailed view, if any, for |close_delay|
   // seconds.
   void SetDetailedViewCloseDelay(int close_delay);
 
+  // Hides the detailed view for |item|.
+  void HideDetailedView(SystemTrayItem* item);
+
   // Shows the notification view for |item|.
   void ShowNotificationView(SystemTrayItem* item);
 
   // Hides the notification view for |item|.
   void HideNotificationView(SystemTrayItem* item);
 
   // Updates the items when the login status of the system changes.
   void UpdateAfterLoginStatusChange(user::LoginStatus login_status);
 
   // Sets whether the tray paints a background. Default is true, but is set to
@@ skipping 80 matching lines @@
   // Overridden from views::View.
   virtual void OnMouseEntered(const views::MouseEvent& event) OVERRIDE;
   virtual void OnMouseExited(const views::MouseEvent& event) OVERRIDE;
   virtual void AboutToRequestFocusFromTabTraversal(bool reverse) OVERRIDE;
   virtual void GetAccessibleState(ui::AccessibleViewState* state) OVERRIDE;
   virtual void OnPaintFocusBorder(gfx::Canvas* canvas) OVERRIDE;
 
   // Overridden from internal::BackgroundAnimatorDelegate.
   virtual void UpdateBackground(int alpha) OVERRIDE;
 
+  // Owned items.
   ScopedVector<SystemTrayItem> items_;
 
+  // Pointers to members of |items_|.
+  SystemTrayItem* detailed_item_;
   std::vector<SystemTrayItem*> notification_items_;
 
   // The container for all the tray views of the items.
   views::View* tray_container_;
 
   // These observers are not owned by the tray.
   AccessibilityObserver* accessibility_observer_;
   AudioObserver* audio_observer_;
   BluetoothObserver* bluetooth_observer_;
   BrightnessObserver* brightness_observer_;
@@ skipping 25 matching lines @@
   internal::BackgroundAnimator hover_background_animator_;
   scoped_ptr<internal::SystemTrayLayerAnimationObserver>
       layer_animation_observer_;
 
   DISALLOW_COPY_AND_ASSIGN(SystemTray);
 };
 
 }  // namespace ash
 
 #endif  // ASH_SYSTEM_TRAY_SYSTEM_TRAY_H_