Moved FolderImageSource class to a separate file.

ui/app_list/views/apps_container_view.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 "ui/app_list/views/apps_container_view.h"
 
 #include <algorithm>
 #include <vector>
 
 #include "base/command_line.h"
 #include "ui/app_list/app_list_constants.h"
 #include "ui/app_list/app_list_folder_item.h"
 #include "ui/app_list/app_list_switches.h"
+#include "ui/app_list/folder_image_source.h"
 #include "ui/app_list/views/app_list_folder_view.h"
 #include "ui/app_list/views/app_list_item_view.h"
 #include "ui/app_list/views/app_list_main_view.h"
 #include "ui/app_list/views/apps_grid_view.h"
 #include "ui/app_list/views/folder_background_view.h"
 #include "ui/events/event.h"
 
 namespace app_list {
 
 AppsContainerView::AppsContainerView(AppListMainView* app_list_main_view,
@@ skipping 171 matching lines @@
 }
 
 std::vector<gfx::Rect> AppsContainerView::GetTopItemIconBoundsInActiveFolder() {
   // Get the active folder's icon bounds relative to AppsContainerView.
   AppListItemView* folder_item_view =
       apps_grid_view_->activated_folder_item_view();
   gfx::Rect to_grid_view = folder_item_view->ConvertRectToParent(
       folder_item_view->GetIconBounds());
   gfx::Rect to_container = apps_grid_view_->ConvertRectToParent(to_grid_view);
 
-  return AppListFolderItem::GetTopIconsBounds(to_container);
+  return FolderImageSource::GetTopIconsBounds(to_container);
 }
 
 void AppsContainerView::CreateViewsForFolderTopItemsAnimation(
     AppListFolderItem* active_folder,
     bool open_folder) {
   top_icon_views_.clear();
   std::vector<gfx::Rect> top_items_bounds =
       GetTopItemIconBoundsInActiveFolder();
   top_icon_animation_pending_count_ =
       std::min(kNumFolderTopItems, active_folder->item_list()->item_count());
@@ skipping 19 matching lines @@
 void AppsContainerView::PrepareToShowApps(AppListFolderItem* folder_item) {
   if (folder_item)
     CreateViewsForFolderTopItemsAnimation(folder_item, false);
 
   // Hide the active folder item until the animation completes.
   if (apps_grid_view_->activated_folder_item_view())
     apps_grid_view_->activated_folder_item_view()->SetVisible(false);
 }
 
 }  // namespace app_list