[ABANDONED] Simplify ash shelf dimmer.

ash/shelf/shelf_layout_manager.cc

 // 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.
 
 #include "ash/shelf/shelf_layout_manager.h"
 
 #include <algorithm>
 #include <cmath>
 #include <vector>
 
@@ skipping 636 matching lines @@
 
   if (delay_background_change) {
     if (update_shelf_observer_)
       update_shelf_observer_->Detach();
     // UpdateShelfBackground deletes itself when the animation is done.
     update_shelf_observer_ = new UpdateShelfObserver(this);
   } else {
     UpdateShelfBackground(change_type);
   }
 
-  shelf_widget_->SetDimsShelf(state.visibility_state == SHELF_VISIBLE &&
-                              state.window_state ==
-                                  wm::WORKSPACE_WINDOW_STATE_MAXIMIZED);
-
   TargetBounds target_bounds;
   CalculateTargetBounds(state_, &target_bounds);
   UpdateBoundsAndOpacity(target_bounds, true, delay_background_change
                                                   ? update_shelf_observer_
                                                   : NULL);
 
   // The delegate must be notified after |state_| is updated so that it can
   // query the new target bounds.
   ShelfDelegate* shelf_delegate = WmShell::Get()->shelf_delegate();
   DCHECK(shelf_delegate);
@@ skipping 281 matching lines @@
 
 void ShelfLayoutManager::UpdateShelfBackground(
     BackgroundAnimatorChangeType type) {
   const ShelfBackgroundType background_type(GetShelfBackgroundType());
   shelf_widget_->SetPaintsBackground(background_type, type);
   FOR_EACH_OBSERVER(ShelfLayoutManagerObserver, observers_,
                     OnBackgroundUpdated(background_type, type));
 }
 
 ShelfBackgroundType ShelfLayoutManager::GetShelfBackgroundType() const {
+  LOG(ERROR) << "MSW GetShelfBackgroundType " << shelf_widget_
+             << " vis:" << (state_.visibility_state != SHELF_AUTO_HIDE)
+             << " max:" << (state_.window_state == wm::WORKSPACE_WINDOW_STATE_MAXIMIZED);
   if (state_.visibility_state != SHELF_AUTO_HIDE &&
       state_.window_state == wm::WORKSPACE_WINDOW_STATE_MAXIMIZED) {
     return SHELF_BACKGROUND_MAXIMIZED;
   }
 
   if (gesture_drag_status_ == GESTURE_DRAG_IN_PROGRESS ||
       (!state_.is_screen_locked && !state_.is_adding_user_screen &&
        window_overlaps_shelf_) ||
       (state_.visibility_state == SHELF_AUTO_HIDE)) {
     return SHELF_BACKGROUND_OVERLAP;
@@ skipping 213 matching lines @@
   if (ash::MaterialDesignController::IsShelfMaterial()) {
     return (state.visibility_state == SHELF_AUTO_HIDE &&
             state.auto_hide_state == SHELF_AUTO_HIDE_SHOWN)
                ? 1.0f
                : 0.0f;
   }
   return (state.visibility_state == SHELF_AUTO_HIDE) ? 1.0f : 0.0f;
 }
 
 }  // namespace ash