[ABANDONED] Simplify ash shelf dimmer.

ash/aura/wm_shelf_aura.cc

 // 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.
 
 #include "ash/aura/wm_shelf_aura.h"
 
 #include "ash/aura/wm_window_aura.h"
 #include "ash/common/shelf/wm_shelf_observer.h"
 #include "ash/common/wm_window.h"
 #include "ash/shelf/shelf.h"
@@ skipping 70 matching lines @@
 }
 
 void WmShelfAura::UpdateAutoHideState() {
   shelf_layout_manager_->UpdateAutoHideState();
 }
 
 ShelfBackgroundType WmShelfAura::GetBackgroundType() const {
   return shelf_layout_manager_->shelf_widget()->GetBackgroundType();
 }
 
-bool WmShelfAura::IsDimmed() const {
-  return shelf_layout_manager_->shelf_widget()->GetDimsShelf();
-}
-
 bool WmShelfAura::IsShowingOverflowBubble() const {
   return shelf_->IsShowingOverflowBubble();
 }
 
 void WmShelfAura::SchedulePaint() {
   // Can be called during shutdown if the overflow bubble is visible.
   if (shelf_)
     shelf_->SchedulePaint();
 }
 
@@ skipping 85 matching lines @@
 void WmShelfAura::OnAutoHideStateChanged(ShelfAutoHideState new_state) {
   FOR_EACH_OBSERVER(WmShelfObserver, observers_,
                     OnAutoHideStateChanged(new_state));
 }
 
 void WmShelfAura::OnShelfIconPositionsChanged() {
   FOR_EACH_OBSERVER(WmShelfObserver, observers_, OnShelfIconPositionsChanged());
 }
 
 }  // namespace ash