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

chrome/browser/ui/tab_contents/tab_contents_wrapper.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/ui/tab_contents/tab_contents_wrapper.h"
 
-#include "base/singleton.h"
+#include "base/lazy_instance.h"
 #include "chrome/browser/password_manager/password_manager.h"
 #include "chrome/browser/password_manager_delegate_impl.h"
 #include "chrome/browser/tab_contents/tab_contents.h"
 
+static base::LazyInstance<PropertyAccessor<TabContentsWrapper*> >
+    g_tab_contents_wrapper_property_accessor(base::LINKER_INITIALIZED);
+
 ////////////////////////////////////////////////////////////////////////////////
 // TabContentsWrapper, public:
 
 TabContentsWrapper::TabContentsWrapper(TabContents* contents)
     : tab_contents_(contents) {
   DCHECK(contents);
   // Stash this in the property bag so it can be retrieved without having to
   // go to a Browser.
   property_accessor()->SetProperty(contents->property_bag(), this);
 
   // Needed so that we initialize the password manager on first navigation.
   tab_contents()->AddNavigationObserver(this);
 }
 
 TabContentsWrapper::~TabContentsWrapper() {
   // Unregister observers (TabContents outlives supporting objects).
   tab_contents()->RemoveNavigationObserver(password_manager_.get());
 }
 
 PropertyAccessor<TabContentsWrapper*>* TabContentsWrapper::property_accessor() {
-  return Singleton< PropertyAccessor<TabContentsWrapper*> >::get();
+  return g_tab_contents_wrapper_property_accessor.Pointer();
 }
 
 TabContentsWrapper* TabContentsWrapper::Clone() {
   TabContents* new_contents = tab_contents()->Clone();
   TabContentsWrapper* new_wrapper = new TabContentsWrapper(new_contents);
   // Instantiate the passowrd manager if it has been instantiated here.
   if (password_manager_.get())
     new_wrapper->GetPasswordManager();
   return new_wrapper;
 }
@@ skipping 11 matching lines @@
   return password_manager_.get();
 }
 
 ////////////////////////////////////////////////////////////////////////////////
 // TabContentsWrapper, WebNavigationObserver implementation:
 
 void TabContentsWrapper::NavigateToPendingEntry() {
   GetPasswordManager();
   tab_contents()->RemoveNavigationObserver(this);
 }