Enable find-missing-symbols-at-link-time for chromeos builds too.

ui/chromeos/ui_chromeos.gyp

 # 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.
 
 {
   'variables': {
     'chromium_code': 1,
   },
   'targets': [
     {
@@ skipping 29 matching lines @@
         },
       ],
       'includes': [ '../../build/grit_target.gypi' ],
     },  # target_name: ui_chromeos_strings
     {
       'target_name': 'ui_chromeos',
       'type': '<(component)',
       'dependencies': [
         '../../base/base.gyp:base',
         '../../base/third_party/dynamic_annotations/dynamic_annotations.gyp:dynamic_annotations',
+        '../../chromeos/chromeos.gyp:chromeos',
         '../../chromeos/chromeos.gyp:power_manager_proto',
         '../../skia/skia.gyp:skia',
         '../aura/aura.gyp:aura',
+        '../base/ui_base.gyp:ui_base',
         '../events/events.gyp:events',
         '../events/events.gyp:gesture_detection',
+        '../gfx/gfx.gyp:gfx',
+        '../gfx/gfx.gyp:gfx_geometry',
         '../message_center/message_center.gyp:message_center',
         '../views/views.gyp:views',
         '../wm/wm.gyp:wm',
         'ui_chromeos_resources',
         'ui_chromeos_strings',
       ],
       'defines': [
         'UI_CHROMEOS_IMPLEMENTATION',
       ],
       'sources': [
@@ skipping 51 matching lines @@
         '../chromeos/ime/candidate_window_view_unittest.cc',
         '../chromeos/ime/input_method_menu_item_unittest.cc',
         '../chromeos/ime/input_method_menu_manager_unittest.cc',
         '../chromeos/network/network_state_notifier_unittest.cc',
         '../chromeos/touch_exploration_controller_unittest.cc',
         'run_all_unittests.cc',
       ],
     },  # target_name: ui_chromeos_unittests
   ],
 }