Componentize spellcheck [1]: create component and move switches there.

ios/chrome/ios_chrome.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 82 matching lines @@
         '../../components/components.gyp:proxy_config',
         '../../components/components.gyp:rappor',
         '../../components/components.gyp:search',
         '../../components/components.gyp:search_engines',
         '../../components/components.gyp:security_interstitials_core',
         '../../components/components.gyp:security_state',
         '../../components/components.gyp:sessions_ios',
         '../../components/components.gyp:signin_core_browser',
         '../../components/components.gyp:signin_core_common',
         '../../components/components.gyp:signin_ios_browser',
+        '../../components/components.gyp:spellcheck_common',
         '../../components/components.gyp:ssl_config',
         '../../components/components.gyp:suggestions',
         '../../components/components.gyp:sync_driver',
         '../../components/components.gyp:syncable_prefs',
         '../../components/components.gyp:translate_core_browser',
         '../../components/components.gyp:translate_ios_browser',
         '../../components/components.gyp:undo_component',
         '../../components/components.gyp:update_client',
         '../../components/components.gyp:upload_list',
         '../../components/components.gyp:user_prefs',
@@ skipping 777 matching lines @@
             '../../components/components.gyp:omnibox_browser',
             '../../components/components.gyp:rlz',
             '../../components/components.gyp:search_engines',
             '../../rlz/rlz.gyp:rlz_lib',
           ],
         },
       ],
     }],
   ],
 }