Use app list item shadow for app list folders.

chrome/browser/ui/app_list/test/fast_show_pickler_unittest.cc

Index: chrome/browser/ui/app_list/test/fast_show_pickler_unittest.cc
diff --git a/chrome/browser/ui/app_list/test/fast_show_pickler_unittest.cc b/chrome/browser/ui/app_list/test/fast_show_pickler_unittest.cc
index 03a48404baed6c57289f480083b8a6bd8ced8c5c..b74cd1524fd482bd48eed669b9bf0e928de962e5 100644
--- a/chrome/browser/ui/app_list/test/fast_show_pickler_unittest.cc
+++ b/chrome/browser/ui/app_list/test/fast_show_pickler_unittest.cc
@@ -98,7 +98,7 @@ TEST_F(AppListModelPicklerUnitTest, Images) {
   AppListItem* app1 =
       model.AddItem(make_scoped_ptr(new AppListItem("abc")).Pass());
   model.SetItemName(app1, "hello, there");
-  app1->SetIcon(MakeImage(), true);
+  app1->SetIcon(MakeImage());
   AppListItem* app2 =
       model.AddItem(make_scoped_ptr(new AppListItem("abc2")).Pass());
   model.SetItemName(app2, "hello, there 2");
@@ -111,7 +111,7 @@ TEST_F(AppListModelPicklerUnitTest, EmptyImage) {
   AppListItem* app1 =
       model.AddItem(make_scoped_ptr(new AppListItem("abc")).Pass());
   model.SetItemName(app1, "hello, there");
-  app1->SetIcon(gfx::ImageSkia(), true);
+  app1->SetIcon(gfx::ImageSkia());
 
   DoConsistencyChecks(&model);
 }