Update SetPaintToLayer to accept LayerType

ash/common/wm/overview/window_selector_item.cc

 // Copyright 2013 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/common/wm/overview/window_selector_item.h"
 
 #include <algorithm>
 #include <vector>
 
 #include "ash/common/material_design/material_design_controller.h"
@@ skipping 174 matching lines @@
                        int corner_radius,
                        SkColor background)
       : item_(item),
         item_window_(item_window),
         corner_radius_(corner_radius),
         initial_color_(background),
         target_color_(background),
         current_value_(0),
         layer_(nullptr),
         animation_(new gfx::SlideAnimation(this)) {
-    SetPaintToLayer(true);
+    SetPaintToLayer();
     layer()->SetFillsBoundsOpaquely(false);
   }
 
   ~RoundedContainerView() override { StopObservingLayerAnimations(); }
 
   void OnItemRestored() {
     item_ = nullptr;
     item_window_ = nullptr;
   }
 
@@ skipping 582 matching lines @@
 
 gfx::SlideAnimation* WindowSelectorItem::GetBackgroundViewAnimation() {
   return background_view_ ? background_view_->animation() : nullptr;
 }
 
 WmWindow* WindowSelectorItem::GetOverviewWindowForMinimizedStateForTest() {
   return transform_window_.GetOverviewWindowForMinimizedState();
 }
 
 }  // namespace ash