s/\bArc\b/ARC/g for ARC related code.

chrome/browser/ui/app_list/app_context_menu_unittest.cc

Index: chrome/browser/ui/app_list/app_context_menu_unittest.cc
diff --git a/chrome/browser/ui/app_list/app_context_menu_unittest.cc b/chrome/browser/ui/app_list/app_context_menu_unittest.cc
index 4c7c2845cd95404e79670c45f2742ed53df9b15b..5f6e29b703ded4b93041f58905206aecc3ff81ac 100644
--- a/chrome/browser/ui/app_list/app_context_menu_unittest.cc
+++ b/chrome/browser/ui/app_list/app_context_menu_unittest.cc
@@ -385,8 +385,8 @@ TEST_F(AppContextMenuTest, ArcMenu) {
   EXPECT_TRUE(launch_requests[0]->IsForApp(app_info));
 
   controller()->SetAppOpen(app_id, true);
-  // It is not expected that menu model is unchanged on GetContextMenuModel. Arc
-  // app menu requires model to be recalculated.
+  // It is not expected that menu model is unchanged on GetContextMenuModel.
+  // ARC app menu requires model to be recalculated.
   menu = item.GetContextMenuModel();
   ASSERT_EQ(4, menu->GetItemCount());
   ValidateItemState(menu, 0, MenuState(app_list::AppContextMenu::TOGGLE_PIN));