Revert of Move base/prefs to components/prefs

components/syncable_prefs.gypi

 # Copyright 2015 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.
 
 {
   'targets': [
     {
       # GN version: //components/syncable_prefs
       'target_name': 'syncable_prefs',
       'type': 'static_library',
       'dependencies': [
         '../base/base.gyp:base',
+        '../base/base.gyp:base_prefs',
         '../sync/sync.gyp:sync',
         'pref_registry',
-        'prefs/prefs.gyp:prefs',
       ],
       'include_dirs': [
         '..',
       ],
       'sources': [
         'syncable_prefs/pref_model_associator.cc',
         'syncable_prefs/pref_model_associator.h',
         'syncable_prefs/pref_model_associator_client.h',
         'syncable_prefs/pref_service_syncable.cc',
         'syncable_prefs/pref_service_syncable.h',
@@ skipping 26 matching lines @@
       ],
       'sources': [
         'syncable_prefs/pref_service_mock_factory.cc',
         'syncable_prefs/pref_service_mock_factory.h',
         'syncable_prefs/testing_pref_service_syncable.cc',
         'syncable_prefs/testing_pref_service_syncable.h',
       ],
     },
   ],
 }