Add NetworkNotificationView to tray_network.

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 142 matching lines @@
   // Returns true if the bubble exists.
   bool CloseBubbleForTest() const;
 
   void SetShelfAlignment(ShelfAlignment alignment);
   ShelfAlignment shelf_alignment() const { return shelf_alignment_; }
 
  private:
   friend class internal::SystemTrayLayerAnimationObserver;
   friend class internal::SystemTrayBubble;
 
+  // Resets |bubble_| and clears any related state.
+  void DestroyBubble();
+
   // Called when the widget associated with |bubble| closes. |bubble| should
   // always == |bubble_|. This triggers destroying |bubble_| and hiding the
   // launcher if necessary.
   void RemoveBubble(internal::SystemTrayBubble* bubble);
 
   const ScopedVector<SystemTrayItem>& items() const { return items_; }
 
   // Calculates the x-offset for the item in the tray. Returns -1 if its tray
   // item view is not visible.
   int GetTrayXOffset(SystemTrayItem* item) const;
@@ skipping 73 matching lines @@
   bool should_show_launcher_;
 
   // Shelf alignment.
   ShelfAlignment shelf_alignment_;
 
   internal::BackgroundAnimator hide_background_animator_;
   internal::BackgroundAnimator hover_background_animator_;
   scoped_ptr<internal::SystemTrayLayerAnimationObserver>
       layer_animation_observer_;
 
+  // Keep track of the default view height so that when we create detailed
+  // views directly (e.g. from a notification) we know what height to use.
+  int default_bubble_height_;
+
   DISALLOW_COPY_AND_ASSIGN(SystemTray);
 };
 
 }  // namespace ash
 
 #endif  // ASH_SYSTEM_TRAY_SYSTEM_TRAY_H_