Add a new GetInstance() method for remaining files with singleton classes under chrome/browser.

chrome/browser/dom_ui/constrained_html_ui.cc

 // Copyright (c) 2010 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/dom_ui/constrained_html_ui.h"
 
-#include "base/singleton.h"
+#include "base/lazy_instance.h"
 #include "chrome/browser/dom_ui/dom_ui_util.h"
 #include "chrome/browser/dom_ui/html_dialog_ui.h"
 #include "chrome/browser/renderer_host/render_view_host.h"
 #include "chrome/common/bindings_policy.h"
 
+static base::LazyInstance<PropertyAccessor<ConstrainedHtmlUIDelegate*> >
+    g_constrained_html_ui_property_accessor(base::LINKER_INITIALIZED);
+
 ConstrainedHtmlUI::ConstrainedHtmlUI(TabContents* contents)
     : DOMUI(contents) {
 }
 
 ConstrainedHtmlUI::~ConstrainedHtmlUI() {
 }
 
 void ConstrainedHtmlUI::RenderViewCreated(
     RenderViewHost* render_view_host) {
   HtmlDialogUIDelegate* delegate =
@@ skipping 20 matching lines @@
 }
 
 ConstrainedHtmlUIDelegate*
     ConstrainedHtmlUI::GetConstrainedDelegate() {
   return *GetPropertyAccessor().GetProperty(tab_contents()->property_bag());
 }
 
 // static
 PropertyAccessor<ConstrainedHtmlUIDelegate*>&
     ConstrainedHtmlUI::GetPropertyAccessor() {
-  return *Singleton<PropertyAccessor<ConstrainedHtmlUIDelegate*> >::get();
+  return g_constrained_html_ui_property_accessor.Get();
 }