Disable folder UI when app sync is disabled

ui/app_list/views/apps_grid_view_unittest.cc

Index: ui/app_list/views/apps_grid_view_unittest.cc
diff --git a/ui/app_list/views/apps_grid_view_unittest.cc b/ui/app_list/views/apps_grid_view_unittest.cc
index d93943d9c6270f775407df0ce4a8a8c6e0eebb4c..0db03601d1ea18579f227f11844bedccb68abe69 100644
--- a/ui/app_list/views/apps_grid_view_unittest.cc
+++ b/ui/app_list/views/apps_grid_view_unittest.cc
@@ -106,6 +106,7 @@ class AppsGridViewTest : public views::ViewsTestBase {
   virtual void SetUp() OVERRIDE {
     views::ViewsTestBase::SetUp();
     model_.reset(new AppListTestModel);
+    model_->SetFoldersEnabled(true);
     pagination_model_.reset(new PaginationModel);
 
     apps_grid_view_.reset(new AppsGridView(NULL, pagination_model_.get()));
@@ -278,7 +279,7 @@ TEST_F(AppsGridViewTest, RemoveSelectedLastApp) {
 }
 
 TEST_F(AppsGridViewTest, MouseDragWithFolderDisabled) {
-  CommandLine::ForCurrentProcess()->AppendSwitch(switches::kDisableSyncAppList);
+  model_->SetFoldersEnabled(false);
   const int kTotalItems = 4;
   model_->PopulateApps(kTotalItems);
   EXPECT_EQ(std::string("Item 0,Item 1,Item 2,Item 3"),
@@ -549,7 +550,7 @@ TEST_F(AppsGridViewTest, MouseDragFlipPage) {
 }
 
 TEST_F(AppsGridViewTest, SimultaneousDragWithFolderDisabled) {
-  CommandLine::ForCurrentProcess()->AppendSwitch(switches::kDisableSyncAppList);
+  model_->SetFoldersEnabled(false);
   const int kTotalItems = 4;
   model_->PopulateApps(kTotalItems);
   EXPECT_EQ(std::string("Item 0,Item 1,Item 2,Item 3"),