MD Settings: move AdvancedOptionsUtilities to a settings-accessible place

chrome/browser/ui/webui/settings/system_handler.cc

 // Copyright 2016 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/settings/system_handler.h"
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/metrics/user_metrics.h"
 #include "base/metrics/user_metrics_action.h"
 #include "content/public/browser/web_ui.h"
 
+#if !defined(OS_CHROMEOS)
+#include "chrome/browser/ui/webui/settings_utils.h"
+#endif
+
 namespace settings {
 
 SystemHandler::SystemHandler() {}
 
 SystemHandler::~SystemHandler() {}
 
 void SystemHandler::RegisterMessages() {
   web_ui()->RegisterMessageCallback("changeProxySettings",
       base::Bind(&SystemHandler::HandleChangeProxySettings,
                  base::Unretained(this)));
 }
 
 void SystemHandler::HandleChangeProxySettings(const base::ListValue* /*args*/) {
   base::RecordAction(base::UserMetricsAction("Options_ShowProxySettings"));
-  // TODO(dbeam): port AdvancedOptionsUtilities::ShowNetworkProxySettings from
-  // advanced_options_utils.h to new, settings accessible place.
+#if defined(OS_CHROMEOS)
+  NOTREACHED();
+#else
+  settings_utils::ShowNetworkProxySettings(web_ui()->GetWebContents());
+#endif
 }
 
 }  // namespace settings