make use of existing gn args in ui build config

chrome/browser/ui/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/crypto.gni")
 import("//build/config/features.gni")
 import("//build/config/ui.gni")
 import("//build/split_static_library.gni")
 import("//chrome/common/features.gni")
 
@@ skipping 329 matching lines @@
       sources += rebase_path(gypi_values.chrome_browser_ui_ash_views_sources,
                              ".",
                              "//chrome")
     }
   } else {
     # !toolkit_views
     if (!is_ios) {
       deps -= [ "//chrome/browser/ui/views" ]
     }
   }
+  if (use_gio) {
+    deps += [ "//build/linux/libgio" ]
+  }
   if (use_aura && !use_ozone && is_desktop_linux) {
     deps += [
-      "//build/linux/libgio",
-
       # gtk2 is the only component that can interact with gtk2 in our new
       # world.
       "//chrome/browser/ui/libgtk2ui",
     ]
   }
   if (is_win || is_mac || is_desktop_linux) {
     sources += rebase_path(gypi_values.chrome_browser_ui_desktop_sources,
                            ".",
                            "//chrome")
     if (is_mac && !mac_views_browser) {
@@ skipping 345 matching lines @@
     "//chrome/browser",
     "//content/public/browser",
     "//content/public/common",
     "//content/test:test_support",
     "//net:test_support",
     "//skia",
     "//testing/gtest",
     "//ui/base",
   ]
 }