ChromeOS: removed outdated --disable-timezone-tracking-option switch.

chrome/browser/chromeos/login/users/chrome_user_manager_impl.cc

Index: chrome/browser/chromeos/login/users/chrome_user_manager_impl.cc
diff --git a/chrome/browser/chromeos/login/users/chrome_user_manager_impl.cc b/chrome/browser/chromeos/login/users/chrome_user_manager_impl.cc
index e4cf8ab7b2ed3b54ee1411640bf91d6afa899975..4658720688778680cc7dd1249543ca601f89962d 100644
--- a/chrome/browser/chromeos/login/users/chrome_user_manager_impl.cc
+++ b/chrome/browser/chromeos/login/users/chrome_user_manager_impl.cc
@@ -1172,11 +1172,6 @@ void ChromeUserManagerImpl::UpdateNumberOfUsers() {
 }
 
 void ChromeUserManagerImpl::UpdateUserTimeZoneRefresher(Profile* profile) {
-  if (base::CommandLine::ForCurrentProcess()->HasSwitch(
-          chromeos::switches::kDisableTimeZoneTrackingOption)) {
-    return;
-  }
-
   const user_manager::User* user =
       ProfileHelper::Get()->GetUserByProfile(profile);
   if (user == NULL)