app_list_folder_item.h: Fix typedefs and includes (ahead of refactor).

ui/app_list/app_list_folder_item.h

Index: ui/app_list/app_list_folder_item.h
diff --git a/ui/app_list/app_list_folder_item.h b/ui/app_list/app_list_folder_item.h
index bfcb86ec30f02aab922112190515ab1947b0515c..be9cc334c2e3cd5641084c538ad89160309fed41 100644
--- a/ui/app_list/app_list_folder_item.h
+++ b/ui/app_list/app_list_folder_item.h
@@ -12,14 +12,15 @@
 #include "ui/app_list/app_list_item.h"
 #include "ui/app_list/app_list_item_list_observer.h"
 #include "ui/app_list/app_list_item_observer.h"
-#include "ui/gfx/geometry/rect.h"
+
+namespace gfx {
+class Rect;
+}
 
 namespace app_list {
 
 class AppListItemList;
 
-typedef std::vector<gfx::Rect> Rects;
-
 // AppListFolderItem implements the model/controller for folders.
 class APP_LIST_EXPORT AppListFolderItem : public AppListItem,
                                           public AppListItemListObserver,
@@ -70,7 +71,8 @@ class APP_LIST_EXPORT AppListFolderItem : public AppListItem,
   // Calculates the top item icons' bounds inside |folder_icon_bounds|.
   // Returns the bounds of top item icons in sequence of top left, top right,
   // bottom left, bottom right.
-  static Rects GetTopIconsBounds(const gfx::Rect& folder_icon_bounds);
+  static std::vector<gfx::Rect> GetTopIconsBounds(
+      const gfx::Rect& folder_icon_bounds);
 
   // Returns an id for a new folder.
   static std::string GenerateId();