When the user navigates to the home page, make sure to set the RLZ string

content/browser/tab_contents/navigation_controller.h

Index: content/browser/tab_contents/navigation_controller.h
===================================================================
--- content/browser/tab_contents/navigation_controller.h	(revision 98959)
+++ content/browser/tab_contents/navigation_controller.h	(working copy)
@@ -176,6 +176,13 @@
   void LoadURL(const GURL& url, const GURL& referrer,
                PageTransition::Type type);
 
+  // Loads the specified URL, specifying extra http headers to add to the
+  // request.  Extra headers are separated by \n.
+  void LoadURLWithHeaders(const GURL& url,
+                          const GURL& referrer,
+                          PageTransition::Type type,
+                          const std::string& extra_headers);
+
   // Loads the current page if this NavigationController was restored from
   // history and the current page has not loaded yet.
   void LoadIfNecessary();
@@ -327,11 +334,13 @@
   bool IsInitialNavigation();
 
   // Creates navigation entry and translates the virtual url to a real one.
-  // Used when navigating to a new URL using LoadURL.
+  // Used when navigating to a new URL using LoadURL.  Extra headers are
+  // separated by \n.
   static NavigationEntry* CreateNavigationEntry(
       const GURL& url,
       const GURL& referrer,
       PageTransition::Type transition,
+      const std::string& extra_headers,
       content::BrowserContext* browser_context);
 
  private: