Use app_list_service_disabled in Athena

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")
 
 gypi_values = exec_script(
     "//build/gypi_to_gn.py",
@@ skipping 175 matching lines @@
       "//components/user_manager",
     ]
     if (!is_chromeos) {
       sources += rebase_path(gypi_values.chrome_browser_ui_ash_non_chromeos,
                              ".", "//chrome")
     }
   } else {  # Not ash.
     sources += rebase_path(gypi_values.chrome_browser_ui_non_ash_sources,
                            ".", "//chrome")
   }
+  if (use_athena) {
+    sources += rebase_path(gypi_values.chrome_browser_ui_athena_sources,
+                           ".", "//chrome")
+  } else {  # Not athena.
+    if (use_ash) {
+      sources += rebase_path(
+          gypi_values.chrome_browser_ui_ash_non_athena_sources,
+          ".", "//chrome")
+    }
+  }
   if (toolkit_views) {
     sources += rebase_path(gypi_values.chrome_browser_ui_views_sources,
                            ".", "//chrome")
     if (!is_chromeos) {
       sources += rebase_path(
           gypi_values.chrome_browser_ui_views_non_chromeos_sources,
           ".", "//chrome")
     }
     if (!is_mac) {
       sources += rebase_path(
@@ skipping 247 matching lines @@
     "//chrome/browser",
     "//content/public/browser",
     "//content/public/common",
     "//content/test:test_support",
     "//net:test_support",
     "//skia",
     "//testing/gtest",
     "//ui/base",
   ]
 }