Convert chrome_url_data_manager (previously a global) into a Singleton. This

chrome/browser/dom_ui/new_tab_ui.cc

Index: chrome/browser/dom_ui/new_tab_ui.cc
diff --git a/chrome/browser/dom_ui/new_tab_ui.cc b/chrome/browser/dom_ui/new_tab_ui.cc
index 02594fe956b9ec151b13ace7e153de36e29d1787..d6aad599f26f2a7b74a728226907f5f1102f2378 100644
--- a/chrome/browser/dom_ui/new_tab_ui.cc
+++ b/chrome/browser/dom_ui/new_tab_ui.cc
@@ -15,6 +15,7 @@
 #include "base/command_line.h"
 #include "base/file_util.h"
 #include "base/histogram.h"
+#include "base/singleton.h"
 #include "base/string_piece.h"
 #include "base/thread.h"
 #include "chrome/browser/browser.h"
@@ -552,7 +553,7 @@ NewTabUI::NewTabUI(TabContents* contents)
     ChromeThread::PostTask(
         ChromeThread::IO, FROM_HERE,
         NewRunnableMethod(
-            &chrome_url_data_manager,
+            Singleton<ChromeURLDataManager>().get(),
             &ChromeURLDataManager::AddDataSource,
             html_source));
   } else {
@@ -575,7 +576,7 @@ NewTabUI::NewTabUI(TabContents* contents)
     bool posted = ChromeThread::PostTask(
         ChromeThread::IO, FROM_HERE,
         NewRunnableMethod(
-            &chrome_url_data_manager,
+            Singleton<ChromeURLDataManager>().get(),
             &ChromeURLDataManager::AddDataSource,
             html_source));
     if (!posted) {
@@ -622,7 +623,7 @@ void NewTabUI::InitializeCSSCaches() {
   bool posted = ChromeThread::PostTask(
       ChromeThread::IO, FROM_HERE,
       NewRunnableMethod(
-          &chrome_url_data_manager,
+          Singleton<ChromeURLDataManager>().get(),
           &ChromeURLDataManager::AddDataSource,
           theme));
   if (!posted) {