Refactoring startup logic for upcoming FRE changes (non-Win 10).

chrome/test/BUILD.gn

Index: chrome/test/BUILD.gn
diff --git a/chrome/test/BUILD.gn b/chrome/test/BUILD.gn
index f2cd2283a0aff63806efe396aed5ccf624e42c9b..491aff1e86ed4a65a600115a7efb431074241ad3 100644
--- a/chrome/test/BUILD.gn
+++ b/chrome/test/BUILD.gn
@@ -4072,6 +4072,8 @@ test("unit_tests") {
       "//chrome/browser/profiles/profile_list_desktop_unittest.cc",
       "//chrome/browser/profiles/profile_statistics_unittest.cc",
       "//chrome/browser/ui/startup/default_browser_infobar_delegate_unittest.cc",
+      "//chrome/browser/ui/startup/startup_browser_creator_impl_unittest.cc",
+      "//chrome/browser/ui/startup/startup_tab_provider_unittest.cc",
     ]
   }
   if (use_gio) {