Observes work area change and auto-hide for notifications.

ash/shelf/shelf_layout_manager.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_SHELF_SHELF_LAYOUT_MANAGER_H_
 #define ASH_SHELF_SHELF_LAYOUT_MANAGER_H_
 
 #include <vector>
 
 #include "ash/ash_export.h"
@@ skipping 56 matching lines @@
   // user can drag the shelf out.
   static const int kWorkspaceAreaAutoHideInset;
 
   // Size of the shelf when auto-hidden.
   static const int kAutoHideSize;
 
   // The size of the shelf when shown (currently only used in alternate
   // settings see ash::switches::UseAlternateShelfLayout).
   static const int kShelfSize;
 
+  static int GetPreferredShelfSize();
+
   explicit ShelfLayoutManager(ShelfWidget* shelf);
   virtual ~ShelfLayoutManager();
 
   // Sets the ShelfAutoHideBehavior. See enum description for details.
   void SetAutoHideBehavior(ShelfAutoHideBehavior behavior);
   ShelfAutoHideBehavior auto_hide_behavior() const {
     return auto_hide_behavior_;
   }
 
   // Sets the alignment. Returns true if the alignment is changed. Otherwise,
@@ skipping 267 matching lines @@
   // The bounds of the keyboard.
   gfx::Rect keyboard_bounds_;
 
   DISALLOW_COPY_AND_ASSIGN(ShelfLayoutManager);
 };
 
 }  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_SHELF_SHELF_LAYOUT_MANAGER_H_