Add ContextMenuSourceType to views::ContextMenuController::ShowContextMenuForView.

ui/app_list/views/app_list_menu_views.cc

Index: ui/app_list/views/app_list_menu_views.cc
diff --git a/ui/app_list/views/app_list_menu_views.cc b/ui/app_list/views/app_list_menu_views.cc
index 1f458809d4f48c73daa5e8c4ede9d371fa769e1e..0eb853607f01c9c0aaad8f34a0b4f88f779d0415 100644
--- a/ui/app_list/views/app_list_menu_views.cc
+++ b/ui/app_list/views/app_list_menu_views.cc
@@ -138,7 +138,8 @@ void AppListMenuViews::RunMenuAt(views::MenuButton* button,
                                  const gfx::Point& point) {
   ignore_result(menu_runner_->RunMenuAt(button->GetWidget(), button,
                                         gfx::Rect(point, gfx::Size()),
-                                        MenuItemView::TOPRIGHT, 0));
+                                        MenuItemView::TOPRIGHT,
+                                        ui::MENU_SOURCE_NONE, 0));
 }
 
 void AppListMenuViews::Cancel() {