Hide lucid sleep setting in guest mode

Only the primary user can enable/disable lucid sleep.

BUG=448551
R=dbeam@chromium.org

Review URL: https://codereview.chromium.org/1013753006

Cr-Commit-Position: refs/heads/master@{#320862}

chrome/browser/ui/webui/options/browser_options_handler.cc

@@ -682,6 +682,7 @@ void BrowserOptionsHandler::GetLocalizedValues(base::DictionaryValue* values) {
 #if defined(OS_CHROMEOS)
   values->SetBoolean(
       "showWakeOnWifi",
+      !Profile::FromWebUI(web_ui())->IsGuestSession() &&
       chromeos::WakeOnWifiManager::Get()->WakeOnWifiSupported() &&
       chromeos::switches::WakeOnWifiEnabled());
   const bool have_disable_time_zone_tracking_option_switch =