Pref service: create service at browser startup

chrome/browser/profiles/profile_impl.cc

Index: chrome/browser/profiles/profile_impl.cc
diff --git a/chrome/browser/profiles/profile_impl.cc b/chrome/browser/profiles/profile_impl.cc
index 03d8ff3f37acab890adfa982e2b42bc4b0e9cb25..ce8af5daf604166d4a37bc5188bd6f68bf9f3770 100644
--- a/chrome/browser/profiles/profile_impl.cc
+++ b/chrome/browser/profiles/profile_impl.cc
@@ -76,6 +76,7 @@
 #include "chrome/browser/ssl/chrome_ssl_host_state_delegate_factory.h"
 #include "chrome/browser/ui/startup/startup_browser_creator.h"
 #include "chrome/common/chrome_constants.h"
+#include "chrome/common/chrome_features.h"
 #include "chrome/common/chrome_paths.h"
 #include "chrome/common/chrome_paths_internal.h"
 #include "chrome/common/chrome_switches.h"
@@ -488,10 +489,15 @@ ProfileImpl::ProfileImpl(
   content::BrowserContext::Initialize(this, path_);
 
   {
+    service_manager::Connector* connector = nullptr;
+    if (base::FeatureList::IsEnabled(features::kPrefService)) {
+      connector = content::BrowserContext::GetConnectorFor(this);
+    }
     prefs_ = chrome_prefs::CreateProfilePrefs(
         path_, sequenced_task_runner, pref_validation_delegate_.get(),
         profile_policy_connector_->policy_service(), supervised_user_settings,
-        CreateExtensionPrefStore(this, false), pref_registry_, async_prefs);
+        CreateExtensionPrefStore(this, false), pref_registry_, async_prefs,
+        connector);
     // Register on BrowserContext.
     user_prefs::UserPrefs::Set(this, prefs_.get());
   }