Remove most occurences of PrefRegistrySyncable::UNSYNCABLE_PREF

chrome/browser/signin/local_auth.cc

Index: chrome/browser/signin/local_auth.cc
diff --git a/chrome/browser/signin/local_auth.cc b/chrome/browser/signin/local_auth.cc
index 9b20c3228769ff2066b178e335e551d31a43061e..5c6ea0356d0b46f92bf0383e4f20e175082eaa3f 100644
--- a/chrome/browser/signin/local_auth.cc
+++ b/chrome/browser/signin/local_auth.cc
@@ -175,10 +175,8 @@ std::string LocalAuth::TruncateStringByBits(const std::string& str,
 
 void LocalAuth::RegisterLocalAuthPrefs(
     user_prefs::PrefRegistrySyncable* registry) {
-  registry->RegisterStringPref(
-      prefs::kGoogleServicesPasswordHash,
-      std::string(),
-      user_prefs::PrefRegistrySyncable::UNSYNCABLE_PREF);
+  registry->RegisterStringPref(prefs::kGoogleServicesPasswordHash,
+                               std::string());
 }
 
 void LocalAuth::SetLocalAuthCredentialsWithEncoding(size_t info_index,