Move base/prefs to components/prefs

components/proximity_auth.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/proximity_auth and
       # //components/proximity_auth/ble.
       'target_name': 'proximity_auth',
       'type': 'static_library',
       'include_dirs': [
         '..',
       ],
       'dependencies': [
         ':cryptauth',
         ':cryptauth_proto',
         ':proximity_auth_logging',
         '../base/base.gyp:base',
-        '../base/base.gyp:base_prefs',
         '../device/bluetooth/bluetooth.gyp:device_bluetooth',
         '../net/net.gyp:net',
+        'prefs/prefs.gyp:prefs',
       ],
       'sources': [
         "proximity_auth/authenticator.h",
         "proximity_auth/ble/bluetooth_low_energy_characteristics_finder.cc",
         "proximity_auth/ble/bluetooth_low_energy_characteristics_finder.h",
         "proximity_auth/ble/bluetooth_low_energy_connection.cc",
         "proximity_auth/ble/bluetooth_low_energy_connection.h",
         "proximity_auth/ble/bluetooth_low_energy_connection_finder.cc",
         "proximity_auth/ble/bluetooth_low_energy_connection_finder.h",
         "proximity_auth/ble/bluetooth_low_energy_device_whitelist.cc",
@@ skipping 221 matching lines @@
         'proximity_auth/webui/proximity_auth_webui_handler.cc',
         'proximity_auth/webui/proximity_auth_webui_handler.h',
         'proximity_auth/webui/reachable_phone_flow.cc',
         'proximity_auth/webui/reachable_phone_flow.h',
         'proximity_auth/webui/url_constants.cc',
         'proximity_auth/webui/url_constants.h',
       ],
     },
   ],
 }