Remove most occurences of PrefRegistrySyncable::UNSYNCABLE_PREF

chrome/browser/policy/cloud/user_policy_signin_service_factory.cc

Index: chrome/browser/policy/cloud/user_policy_signin_service_factory.cc
diff --git a/chrome/browser/policy/cloud/user_policy_signin_service_factory.cc b/chrome/browser/policy/cloud/user_policy_signin_service_factory.cc
index dd9ea86224ed552d01836c311a979ded1b407253..60c2b5c354742e04b3b16c083a6184a87f86e4da 100644
--- a/chrome/browser/policy/cloud/user_policy_signin_service_factory.cc
+++ b/chrome/browser/policy/cloud/user_policy_signin_service_factory.cc
@@ -98,10 +98,7 @@ UserPolicySigninServiceFactory::ServiceIsCreatedWithBrowserContext() const {
 void UserPolicySigninServiceFactory::RegisterProfilePrefs(
     user_prefs::PrefRegistrySyncable* user_prefs) {
 #if defined(OS_ANDROID) || defined(OS_IOS)
-  user_prefs->RegisterInt64Pref(
-      prefs::kLastPolicyCheckTime,
-      0,
-      user_prefs::PrefRegistrySyncable::UNSYNCABLE_PREF);
+  user_prefs->RegisterInt64Pref(prefs::kLastPolicyCheckTime, 0);
 #endif
 }