Put "make this my home page" link into the tip section....

chrome/browser/dom_ui/tips_handler.h

Index: chrome/browser/dom_ui/tips_handler.h
===================================================================
--- chrome/browser/dom_ui/tips_handler.h	(revision 33574)
+++ chrome/browser/dom_ui/tips_handler.h	(working copy)
@@ -9,6 +9,8 @@
 #ifndef CHROME_BROWSER_DOM_UI_TIPS_HANDLER_H_
 #define CHROME_BROWSER_DOM_UI_TIPS_HANDLER_H_
 
+#include <string>
+
 #include "chrome/browser/dom_ui/dom_ui.h"
 
 class DictionaryValue;
@@ -35,6 +37,11 @@
   // Make sure the string we are pushing to the NTP is a valid URL.
   bool IsValidURL(const std::wstring& url_string);
 
+  // Send a tip to the NTP.  tip_type is "tip_html_text" if the tip is from
+  // the tip server, and "set_homepage_tip" if it's the tip to set the NTP
+  // as home page.
+  void SendTip(std::string tip, std::wstring tip_type, int tip_index);
+
   // So we can push data out to the page that has called this handler.
   DOMUI* dom_ui_;