Pref service: delete old implementation

chrome/app/BUILD.gn

 # 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.
 
 import("//build/config/ui.gni")
 import("//chrome/common/features.gni")
 import("//ppapi/features/features.gni")
 import("//printing/features/features.gni")
 import("//services/catalog/public/tools/catalog.gni")
 import("//services/service_manager/public/service_manifest.gni")
@@ skipping 345 matching lines @@
   }
 
   if (enable_plugins && enable_nacl) {
     deps += [
       "//components/nacl/browser",
       "//components/nacl/renderer/plugin:nacl_trusted_plugin",
     ]
   }
 }
 
-chrome_packaged_services = [
-  ":chrome_manifest",
-  "//chrome/browser:preferences_manifest",
-]
+chrome_packaged_services = [ ":chrome_manifest" ]
 
 if (is_chromeos) {
   chrome_packaged_services +=
       [ "//chrome/browser:preferences_forwarder_manifest" ]
 }
 
 service_manifest("chrome_manifest") {
   source = "chrome_manifest.json"
 }
 
@@ skipping 121 matching lines @@
           chrome_embedded_services +
           [ ":chrome_content_packaged_services_manifest_for_mash" ]
     }
   }
 
   catalog("catalog") {
     embedded_services = chrome_embedded_services +
                         [ ":chrome_content_packaged_services_manifest" ]
   }
 }