Move base/prefs to components/prefs

ios/crnet/crnet.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': [
     {
       'target_name': 'crnet',
       'type': 'static_library',
       'dependencies': [
         '../../components/components.gyp:webp_transcode',
+        '../../components/prefs/prefs.gyp:prefs',
         '../../ios/net/ios_net.gyp:ios_net',
         '../../ios/web/ios_web.gyp:user_agent',
         '../../net/net.gyp:net',
         'crnet_resources',
       ],
       'mac_framework_headers': [
         'CrNet.h',
       ],
       'direct_dependent_settings': {
         'include_dirs': [ '.' ],
@@ skipping 85 matching lines @@
       'all_dependent_settings': {
         'link_settings': {
           'mac_bundle_resources': [
             '>(PRODUCT_DIR)/crnet_resources.bundle',
           ],
         },
       },
     },
   ],
 }