mash: Remove WorkspaceLayoutManagerDelegate.

ash/shell.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_SHELL_H_
 #define ASH_SHELL_H_
 
 #include <memory>
 #include <utility>
 #include <vector>
@@ skipping 346 matching lines @@
   void UpdateShelfVisibility();
 
   // Called when the alignment for a shelf changes.
   // TODO(jamescook): Move to Shelf.
   void OnShelfAlignmentChanged(WmWindow* root_window);
 
   // Called when the auto-hide behavior for a shelf changes.
   // TODO(jamescook): Move to Shelf.
   void OnShelfAutoHideBehaviorChanged(WmWindow* root_window);
 
-  // Notifies |observers_| when entering or exiting fullscreen mode in
-  // |root_window|.
-  // TODO(hidehiko): Rename this to NotifyFullscreenStateChanged.
-  void NotifyFullscreenStateChange(bool is_fullscreen, WmWindow* root_window);
-
   // Creates a modal background (a partially-opaque fullscreen window)
   // on all displays for |window|.
   void CreateModalBackground(aura::Window* window);
 
   // Called when a modal window is removed. It will activate
   // another modal window if any, or remove modal screens
   // on all displays.
   void OnModalWindowRemoved(aura::Window* removed);
 
   // Returns WebNotificationTray on the primary root window.
@@ skipping 237 matching lines @@
   base::SequencedWorkerPool* blocking_pool_;
 
   bool in_mus_ = false;
 
   DISALLOW_COPY_AND_ASSIGN(Shell);
 };
 
 }  // namespace ash
 
 #endif  // ASH_SHELL_H_