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

chrome/browser/sessions/session_types.h

Index: chrome/browser/sessions/session_types.h
===================================================================
--- chrome/browser/sessions/session_types.h	(revision 98807)
+++ chrome/browser/sessions/session_types.h	(working copy)
@@ -83,6 +83,13 @@
   void set_index(int index) { index_ = index; }
   int index() const { return index_; }
 
+  // The extra headers.
+  void set_extra_headers(const std::string& extra_headers) {
+    extra_headers_ = extra_headers;
+  }
+  const std::string& extra_headers() const { return extra_headers_; }
+
+  // State bits.
   // Converts a set of TabNavigations into a set of NavigationEntrys. The
   // caller owns the NavigationEntrys.
   static void CreateNavigationEntriesFromTabNavigations(
@@ -99,6 +106,7 @@
   std::string state_;
   PageTransition::Type transition_;
   int type_mask_;
+  std::string extra_headers_;
 
   int index_;
 };