[mus+ash] Removes WmWindow from ash/wm/screen_pinning_controller.h

ash/shell_observer.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_OBSERVER_H_
 #define ASH_SHELL_OBSERVER_H_
 
 #include "ash/ash_export.h"
 #include "ash/login_status.h"
 
@@ skipping 23 matching lines @@
   virtual void OnShelfAutoHideBehaviorChanged(WmWindow* root_window) {}
 
   // Invoked when the projection touch HUD is toggled.
   virtual void OnTouchHudProjectionToggled(bool enabled) {}
 
   // Invoked when entering or exiting fullscreen mode in |root_window|.
   virtual void OnFullscreenStateChanged(bool is_fullscreen,
                                         WmWindow* root_window) {}
 
   // Invoked when |pinned_window| enter or exit pinned mode.
-  virtual void OnPinnedStateChanged(WmWindow* pinned_window) {}
+  virtual void OnPinnedStateChanged(aura::Window* pinned_window) {}
 
   // Called when the overview mode is about to be started (before the windows
   // get re-arranged).
   virtual void OnOverviewModeStarting() {}
 
   // Called after overview mode has ended.
   virtual void OnOverviewModeEnded() {}
 
   // Called when the always maximize mode has started. Windows might still
   // animate though.
@@ skipping 13 matching lines @@
   // Called at the end of Shell::Init.
   virtual void OnShellInitialized() {}
 
  protected:
   virtual ~ShellObserver() {}
 };
 
 }  // namespace ash
 
 #endif  // ASH_SHELL_OBSERVER_H_