Componentize proxy code from chrome/browser/net

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 52 matching lines @@
         '../../components/components.gyp:invalidation_public',
         '../../components/components.gyp:keyed_service_core',
         '../../components/components.gyp:keyed_service_ios',
         '../../components/components.gyp:leveldb_proto',
         '../../components/components.gyp:metrics',
         '../../components/components.gyp:omnibox_browser',
         '../../components/components.gyp:open_from_clipboard',
         '../../components/components.gyp:password_manager_core_browser',
         '../../components/components.gyp:password_manager_sync_browser',
         '../../components/components.gyp:pref_registry',
+        '../../components/components.gyp:proxy_config',
         '../../components/components.gyp:search',
         '../../components/components.gyp:search_engines',
         '../../components/components.gyp:signin_core_browser',
         '../../components/components.gyp:signin_core_common',
         '../../components/components.gyp:suggestions',
         '../../components/components.gyp:sync_driver',
         '../../components/components.gyp:translate_core_browser',
         '../../components/components.gyp:translate_ios_browser',
         '../../components/components.gyp:undo_component',
         '../../components/components.gyp:upload_list',
@@ skipping 462 matching lines @@
             '../../components/components.gyp:omnibox_browser',
             '../../components/components.gyp:rlz',
             '../../components/components.gyp:search_engines',
             '../../rlz/rlz.gyp:rlz_lib',
           ],
         },
       ],
     }],
   ],
 }