make use of the use_gio gn arg

chrome/test/BUILD.gn

Index: chrome/test/BUILD.gn
diff --git a/chrome/test/BUILD.gn b/chrome/test/BUILD.gn
index 9313458c9a76cc95b0c0f8a6146cd8b72beab0d0..3eefd311774eee0b974d702281ba40d4e2329da2 100644
--- a/chrome/test/BUILD.gn
+++ b/chrome/test/BUILD.gn
@@ -1999,11 +1999,11 @@ test("unit_tests") {
       "//chrome/browser/ui/startup/default_browser_infobar_delegate_unittest.cc",
     ]
   }
+  if (use_gio) {
+    deps += [ "//build/linux/libgio" ]
+  }
   if (!is_chromeos && !use_ozone && is_linux) {
-    deps += [
-      "//build/linux/libgio",
-      "//chrome/browser/ui/libgtk2ui",
-    ]
+    deps += [ "//chrome/browser/ui/libgtk2ui" ]
   }
 
   if (enable_task_manager) {