Remove null link from "welcome to tips" default suggestion. Also make some h...

chrome/browser/dom_ui/tips_handler.h

Index: chrome/browser/dom_ui/tips_handler.h
===================================================================
--- chrome/browser/dom_ui/tips_handler.h	(revision 19737)
+++ chrome/browser/dom_ui/tips_handler.h	(working copy)
@@ -31,8 +31,8 @@
   TipsHandler() : tips_cache_(NULL) {}
   virtual ~TipsHandler() {}
 
-  // DOMMessageHandler implementation and overrides. 
-  virtual DOMMessageHandler* Attach(DOMUI* dom_ui); 
+  // DOMMessageHandler implementation and overrides.
+  virtual DOMMessageHandler* Attach(DOMUI* dom_ui);
   virtual void RegisterMessages();
 
   // Callback which pulls tips data from the preferences.
@@ -45,6 +45,9 @@
   // Make sure the string we are pushing to the NTP is a valid URL.
   bool IsValidURL(const std::wstring& url_string);
 
+  // So we can push data out to the page that has called this handler.
+  DOMUI* dom_ui_;
+
   // Filled with data from cache in preferences.
   const DictionaryValue* tips_cache_;