[ABANDONED] Simplify ash shelf dimmer.

ash/common/shelf/wm_shelf.h

 // Copyright 2016 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_COMMON_SHELF_WM_SHELF_H_
 #define ASH_COMMON_SHELF_WM_SHELF_H_
 
 #include "ash/ash_export.h"
 #include "ash/common/shelf/shelf_types.h"
 
@@ skipping 26 matching lines @@
   virtual void SetAutoHideBehavior(ShelfAutoHideBehavior behavior) = 0;
 
   virtual ShelfAutoHideState GetAutoHideState() const = 0;
 
   // Invoke when the auto-hide state may have changed (for example, when the
   // system tray bubble opens it should force the shelf to be visible).
   virtual void UpdateAutoHideState() = 0;
 
   virtual ShelfBackgroundType GetBackgroundType() const = 0;
 
-  // Shelf items are slightly dimmed (e.g. when a window is maximized).
-  virtual bool IsDimmed() const = 0;
-
   // Whether the shelf item overflow bubble is visible.
   // TODO(jamescook): Eliminate when ShelfView moves to //ash/common.
   // http://crbug.com/615155
   virtual bool IsShowingOverflowBubble() const = 0;
 
   // Schedules a repaint for all shelf buttons.
   // TODO(jamescook): Eliminate when ShelfView moves to //ash/common.
   // http://crbug.com/615155
   virtual void SchedulePaint() = 0;
 
@@ skipping 36 matching lines @@
   virtual ShelfLockingManager* GetShelfLockingManagerForTesting() = 0;
   virtual ShelfView* GetShelfViewForTesting() = 0;
 
  protected:
   virtual ~WmShelf() {}
 };
 
 }  // namespace ash
 
 #endif  // ASH_COMMON_SHELF_WM_SHELF_H_