Add a new GetInstance() method for singleton classes used in chrome/browser files.

chrome/browser/ui/views/frame/browser_view.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/views/frame/browser_view.h"
 
 #if defined(OS_LINUX)
 #include <gtk/gtk.h>
 #endif
 
@@ skipping 626 matching lines @@
     if (it->second == cmd_id) {
       *accelerator = it->first;
       return true;
     }
   }
   return false;
 }
 
 bool BrowserView::ActivateAppModalDialog() const {
   // If another browser is app modal, flash and activate the modal browser.
-  if (Singleton<AppModalDialogQueue>()->HasActiveDialog()) {
+  if (AppModalDialogQueue::GetInstance()->HasActiveDialog()) {
     Browser* active_browser = BrowserList::GetLastActive();
     if (active_browser && (browser_ != active_browser)) {
       active_browser->window()->FlashFrame();
       active_browser->window()->Activate();
     }
-    Singleton<AppModalDialogQueue>()->ActivateModalDialog();
+    AppModalDialogQueue::GetInstance()->ActivateModalDialog();
     return true;
   }
   return false;
 }
 
 void BrowserView::ActivationChanged(bool activated) {
   if (activated)
     BrowserList::SetLastActive(browser_.get());
 }
 
@@ skipping 1844 matching lines @@
       SetAccessibleName(l10n_util::GetString(IDS_PRODUCT_NAME));
 
   return view;
 }
 #endif
 
 // static
 FindBar* BrowserWindow::CreateFindBar(Browser* browser) {
   return browser::CreateFindBar(static_cast<BrowserView*>(browser->window()));
 }