Update SetPaintToLayer to accept LayerType

ui/app_list/views/apps_grid_view.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 "ui/app_list/views/apps_grid_view.h"
 
 #include <algorithm>
 #include <set>
 #include <string>
 
@@ skipping 204 matching lines @@
       drag_start_page_(-1),
       drag_pointer_(NONE),
       drop_attempt_(DROP_FOR_NONE),
       drag_and_drop_host_(NULL),
       forward_events_to_drag_and_drop_host_(false),
       page_flip_target_(-1),
       page_flip_delay_in_ms_(kPageFlipDelayInMs),
       bounds_animator_(this),
       activated_folder_item_view_(NULL),
       dragging_for_reparent_item_(false) {
-  SetPaintToLayer(true);
+  SetPaintToLayer();
   // Clip any icons that are outside the grid view's bounds. These icons would
   // otherwise be visible to the user when the grid view is off screen.
   layer()->SetMasksToBounds(true);
   layer()->SetFillsBoundsOpaquely(false);
 
   pagination_model_.SetTransitionDurations(kPageTransitionDurationInMs,
                                            kOverscrollPageTransitionDurationMs);
 
   pagination_model_.AddObserver(this);
   pagination_controller_.reset(new PaginationController(
@@ skipping 315 matching lines @@
 
   // Since the item is new, its placeholder is conceptually at the back of the
   // entire apps grid.
   reorder_placeholder_ = GetLastViewIndex();
 
   // Create a new AppListItemView to duplicate the original_drag_view in the
   // folder's grid view.
   AppListItemView* view = new AppListItemView(this, original_drag_view->item());
   AddChildView(view);
   drag_view_ = view;
-  drag_view_->SetPaintToLayer(true);
+  drag_view_->SetPaintToLayer();
   drag_view_->layer()->SetFillsBoundsOpaquely(false);
   drag_view_->SetBoundsRect(drag_view_rect);
   drag_view_->SetDragUIState();  // Hide the title of the drag_view_.
 
   // Hide the drag_view_ for drag icon proxy when a native drag is responsible
   // for showing the icon.
   if (has_native_drag)
     SetViewHidden(drag_view_, true /* hide */, true /* no animate */);
 
   // Add drag_view_ to the end of the view_model_.
@@ skipping 246 matching lines @@
     AddChildView(view);
   }
 }
 
 AppListItemView* AppsGridView::CreateViewForItemAtIndex(size_t index) {
   // The drag_view_ might be pending for deletion, therefore view_model_
   // may have one more item than item_list_.
   DCHECK_LE(index, item_list_->item_count());
   AppListItemView* view = new AppListItemView(this,
                                               item_list_->item_at(index));
-  view->SetPaintToLayer(true);
+  view->SetPaintToLayer();
   view->layer()->SetFillsBoundsOpaquely(false);
   return view;
 }
 
 AppsGridView::Index AppsGridView::GetIndexFromModelIndex(
     int model_index) const {
   return Index(model_index / tiles_per_page(), model_index % tiles_per_page());
 }
 
 int AppsGridView::GetModelIndexFromIndex(const Index& index) const {
@@ skipping 1076 matching lines @@
 
 void AppsGridView::SetAsFolderDroppingTarget(const Index& target_index,
                                              bool is_target_folder) {
   AppListItemView* target_view =
       GetViewDisplayedAtSlotOnCurrentPage(target_index.slot);
   if (target_view)
     target_view->SetAsAttemptedFolderTarget(is_target_folder);
 }
 
 }  // namespace app_list