Revert of Move base/prefs to components/prefs

components/keyed_service.gypi

 # 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.
 
 {
   'targets': [
     {
       # GN version: //components/keyed_service/core:core
       'target_name': 'keyed_service_core',
       'type': '<(component)',
       'defines': [
         'KEYED_SERVICE_IMPLEMENTATION',
       ],
       'include_dirs': [
         '..',
       ],
       # TODO(jschuh): crbug.com/167187 fix size_t to int truncations.
       'msvs_disabled_warnings': [ 4267, ],
       'dependencies': [
         '../base/base.gyp:base',
-        'prefs/prefs.gyp:prefs',
+        '../base/base.gyp:base_prefs',
         'user_prefs',
       ],
       'sources': [
         'keyed_service/core/dependency_graph.cc',
         'keyed_service/core/dependency_graph.h',
         'keyed_service/core/dependency_manager.cc',
         'keyed_service/core/dependency_manager.h',
         'keyed_service/core/dependency_node.h',
         'keyed_service/core/keyed_service.cc',
         'keyed_service/core/keyed_service.h',
@@ skipping 70 matching lines @@
             'keyed_service/ios/browser_state_dependency_manager.h',
             'keyed_service/ios/browser_state_keyed_service_factory.cc',
             'keyed_service/ios/browser_state_keyed_service_factory.h',
             'keyed_service/ios/refcounted_browser_state_keyed_service_factory.cc',
             'keyed_service/ios/refcounted_browser_state_keyed_service_factory.h',
         ],
       }],
     }],
   ],
 }