ChromeOS: implement per-user time zone preferences.

chromeos/settings/cros_settings_names.cc

Index: chromeos/settings/cros_settings_names.cc
diff --git a/chromeos/settings/cros_settings_names.cc b/chromeos/settings/cros_settings_names.cc
index e203881ff443a03475bff3856e670a3e54338719..34a8ebddd07bc7502f2d04e8b8d2b591d6b21e2a 100644
--- a/chromeos/settings/cros_settings_names.cc
+++ b/chromeos/settings/cros_settings_names.cc
@@ -245,4 +245,7 @@ const char kDeviceLoginScreenLocales[] = "cros.device_login_screen_locales";
 const char kDeviceLoginScreenInputMethods[] =
     "cros.device_login_screen_input_methods";
 
+// A boolean pref that matches enable-per-user-time-zone chrome://flags value.
+const char kPerUserTimezoneEnabled[] = "cros.flags.per_user_timezone_enabled";
+
 }  // namespace chromeos