Allow device policy code to be optionally included.

chrome/browser/ui/webui/options/options_managed_banner_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/options_managed_banner_handler.h"
 
 #include "base/string_util.h"
 #include "base/values.h"
 #include "chrome/browser/profiles/profile.h"
 #include "content/browser/webui/web_ui.h"
 
+// static
+OptionsManagedBannerHandler* OptionsManagedBannerHandler::Create(
+    WebUI* web_ui, const string16& page_name, OptionsPage page) {
+  return new OptionsManagedBannerHandler(web_ui, page_name, page);
+}
+
 OptionsManagedBannerHandler::OptionsManagedBannerHandler(
     WebUI* web_ui, const string16& page_name, OptionsPage page)
     : policy::ManagedPrefsBannerBase(web_ui->GetProfile()->GetPrefs(), page),
       web_ui_(web_ui), page_name_(page_name), page_(page) {
   // Initialize the visibility state of the banner.
   SetupBannerVisibility();
 }
 
 OptionsManagedBannerHandler::~OptionsManagedBannerHandler() {}
 
 void OptionsManagedBannerHandler::OnUpdateVisibility() {
   // A preference that may be managed has changed.  Update our visibility
   // state.
   SetupBannerVisibility();
 }
 
 void OptionsManagedBannerHandler::SetupBannerVisibility() {
   // Construct the banner visibility script name.
   std::string script = "options." + UTF16ToASCII(page_name_) +
       ".getInstance().setManagedBannerVisibility";
 
   // Get the visiblity value from the base class.
   FundamentalValue visibility(DetermineVisibility());
 
   // Set the managed state in the javascript handler.
   web_ui_->CallJavascriptFunction(script, visibility);
 }