make use of the use_gio gn arg

chrome/test/BUILD.gn

 # Copyright 2014 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 import("//build/config/chrome_build.gni")
 import("//build/config/compiler/compiler.gni")
 import("//build/config/crypto.gni")
 import("//build/config/features.gni")
 import("//build/config/ui.gni")
 import("//chrome/chrome_tests.gni")
@@ skipping 1981 matching lines @@
             "//chrome")
   }
   if (!is_android && !is_ios && !is_chromeos) {
     sources += [
       "../browser/net/disk_cache_dir_policy_handler_unittest.cc",
       "//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",
     ]
   }
+  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) {
     sources += rebase_path(
             chrome_tests_unit_gypi_values.chrome_unit_tests_task_manager_sources,
             ".",
             "//chrome")
   }
   if (enable_mdns) {
     sources += rebase_path(
@@ skipping 456 matching lines @@
 if (is_android) {
   android_library("unit_tests_java") {
     java_files = [ "android/unit_tests_apk/src/org/chromium/chrome/unit_tests_apk/ChromeNativeTestApplication.java" ]
     deps = [
       "//base:base_java",
       "//chrome/android:chrome_java",
       "//content/public/android:content_java",
     ]
   }
 }