mash: switch to the new pref service

chrome/browser/BUILD.gn

Index: chrome/browser/BUILD.gn
diff --git a/chrome/browser/BUILD.gn b/chrome/browser/BUILD.gn
index d227eff23070baa628a26e68d38d359f2993695e..85962205683e9ab9167b66ba49f0185ccd215b3e 100644
--- a/chrome/browser/BUILD.gn
+++ b/chrome/browser/BUILD.gn
@@ -2296,6 +2296,8 @@ split_static_library("browser") {
       "metrics/perf/windowed_incognito_observer.h",
       "policy/default_geolocation_policy_handler.cc",
       "policy/default_geolocation_policy_handler.h",
+      "prefs/active_profile_pref_service.cc",
+      "prefs/active_profile_pref_service.h",
       "task_manager/providers/arc/arc_process_filter.cc",
       "task_manager/providers/arc/arc_process_filter.h",
       "task_manager/providers/arc/arc_process_task.cc",
@@ -4615,3 +4617,8 @@ service_manifest("preferences_manifest") {
   name = "preferences"
   source = "prefs/preferences_manifest.json"
 }
+
+service_manifest("preferences_forwarder_manifest") {
+  name = "preferences_forwarder"
+  source = "prefs/forwarder_manifest.json"
+}