[ABANDONED] Simplify ash shelf dimmer.

ash/shelf/shelf_layout_manager.cc

Index: ash/shelf/shelf_layout_manager.cc
diff --git a/ash/shelf/shelf_layout_manager.cc b/ash/shelf/shelf_layout_manager.cc
index 93788749a62681cf0fe7bea47b9cbc29f3f9f978..00e27b3589d80871f16fedb48f939c3fc0f4d994 100644
--- a/ash/shelf/shelf_layout_manager.cc
+++ b/ash/shelf/shelf_layout_manager.cc
@@ -654,10 +654,6 @@ void ShelfLayoutManager::SetState(ShelfVisibilityState visibility_state) {
     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
@@ -959,6 +955,9 @@ void ShelfLayoutManager::UpdateShelfBackground(
 }
 
 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;