Move base/prefs to components/prefs

components/metrics.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/metrics
       'target_name': 'metrics',
       'type': 'static_library',
       'include_dirs': [
         '..',
       ],
       'dependencies': [
         '../base/base.gyp:base',
         '../base/base.gyp:base_i18n',
-        '../base/base.gyp:base_prefs',
         '../third_party/zlib/google/zip.gyp:compression_utils',
         'component_metrics_proto',
+        'prefs/prefs.gyp:prefs',
         'variations',
       ],
       'export_dependent_settings': [
         'component_metrics_proto',
       ],
       'sources': [
         'metrics/call_stack_profile_metrics_provider.cc',
         'metrics/call_stack_profile_metrics_provider.h',
         'metrics/clean_exit_beacon.cc',
         'metrics/clean_exit_beacon.h',
@@ skipping 293 matching lines @@
           ],
           'sources': [
             'metrics/profiler/ios/ios_tracking_synchronizer_delegate.cc',
             'metrics/profiler/ios/ios_tracking_synchronizer_delegate.h',
           ],
         },
       ],
     }],
   ],
 }