Convert chrome_url_data_manager (previously a global) into a

chrome/browser/dom_ui/downloads_dom_handler.cc

Index: chrome/browser/dom_ui/downloads_dom_handler.cc
diff --git a/chrome/browser/dom_ui/downloads_dom_handler.cc b/chrome/browser/dom_ui/downloads_dom_handler.cc
index 7b7791513727ff93d3c70a753fe8af7d788746cd..67994753c71d3567eb1a0f409f31980e9c6cca45 100644
--- a/chrome/browser/dom_ui/downloads_dom_handler.cc
+++ b/chrome/browser/dom_ui/downloads_dom_handler.cc
@@ -7,6 +7,7 @@
 #include "app/l10n_util.h"
 #include "base/basictypes.h"
 #include "base/i18n/time_formatting.h"
+#include "base/singleton.h"
 #include "base/string_piece.h"
 #include "base/thread.h"
 #include "base/values.h"
@@ -54,7 +55,7 @@ DownloadsDOMHandler::DownloadsDOMHandler(DownloadManager* dlm)
   // Create our fileicon data source.
   ChromeThread::PostTask(
       ChromeThread::IO, FROM_HERE,
-      NewRunnableMethod(&chrome_url_data_manager,
+      NewRunnableMethod(Singleton<ChromeURLDataManager>().get(),
                         &ChromeURLDataManager::AddDataSource,
                         new FileIconSource()));
 }