Only show prefer network checkbox for networks stored on user profile.

chrome/browser/ui/webui/options/chromeos/internet_options_handler.cc

 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/ui/webui/options/chromeos/internet_options_handler.h"
 
 #include <ctype.h>
 
 #include <map>
 #include <string>
@@ skipping 686 matching lines @@
   dictionary.SetBoolean("showSharedProxiesHint",
       !proxy_configurable && !use_shared_proxies &&
       (remembered || type == chromeos::TYPE_ETHERNET));
 
   // Hide the dhcp/static radio if not ethernet or wifi (or if not enabled)
   bool staticIPConfig = CommandLine::ForCurrentProcess()->HasSwitch(
       switches::kEnableStaticIPConfig);
   dictionary.SetBoolean("showStaticIPConfig", staticIPConfig &&
       (type == chromeos::TYPE_WIFI || type == chromeos::TYPE_ETHERNET));
 
-  dictionary.SetBoolean("preferred", network->preferred());
+  if (network->profile_type() == chromeos::PROFILE_USER) {
+    dictionary.SetBoolean("showPreferred", true);
+    dictionary.SetBoolean("preferred", network->preferred());
+  } else {
+    dictionary.SetBoolean("showPreferred", false);
+    dictionary.SetBoolean("preferred", false);
+  }
   dictionary.SetBoolean("autoConnect", network->auto_connect());
 
   if (type == chromeos::TYPE_WIFI) {
     dictionary.SetBoolean("deviceConnected", cros_->wifi_connected());
     const chromeos::WifiNetwork* wifi =
         cros_->FindWifiNetworkByPath(network->service_path());
     if (!wifi) {
       LOG(WARNING) << "Cannot find network " << network->service_path();
     } else {
       PopulateWifiDetails(wifi, &dictionary);
@@ skipping 542 matching lines @@
   dictionary->SetBoolean("accessLocked", cros_->IsLocked());
   dictionary->Set("wiredList", GetWiredList());
   dictionary->Set("wirelessList", GetWirelessList());
   dictionary->Set("vpnList", GetVPNList());
   dictionary->Set("rememberedList", GetRememberedList());
   dictionary->SetBoolean("wifiAvailable", cros_->wifi_available());
   dictionary->SetBoolean("wifiEnabled", cros_->wifi_enabled());
   dictionary->SetBoolean("cellularAvailable", cros_->cellular_available());
   dictionary->SetBoolean("cellularEnabled", cros_->cellular_enabled());
 }