remove duplicate atk GN config

ui/views/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/features.gni")
 import("//build/config/ui.gni")
 import("//testing/test.gni")
 
 gypi_values = exec_script("//build/gypi_to_gn.py",
                           [ rebase_path("views.gyp") ],
@@ skipping 102 matching lines @@
 
   if (use_aura) {
     sources += gypi_values.views_aura_sources
     deps += [
       "//ui/aura",
       "//ui/touch_selection",
       "//ui/wm",
     ]
     if (!is_chromeos) {
       sources += gypi_values.views_desktop_aura_sources
-      if (use_x11) {
+      if (use_atk) {
         sources += gypi_values.views_desktop_aura_x11_sources
-        configs += [ "//ui/accessibility:atk" ]
+        configs += [ "//build/config/linux/atk" ]
       } else if (is_win) {
         sources += gypi_values.views_desktop_aura_win_sources
       } else if (use_ozone) {
         sources += gypi_values.views_desktop_aura_ozone_sources
       }
       if (is_linux) {
         sources += gypi_values.views_desktop_aura_linux_sources
       }
     }
   }
@@ skipping 189 matching lines @@
       "//ui/base:test_support",
       "//ui/compositor",
       "//ui/events:test_support",
       "//ui/gl:test_support",
       "//ui/resources",
       "//ui/resources:ui_test_pak",
       "//ui/strings",
     ]
   }
 }