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

chrome/browser/sessions/session_types.h

 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CHROME_BROWSER_SESSIONS_SESSION_TYPES_H_
 #define CHROME_BROWSER_SESSIONS_SESSION_TYPES_H_
 #pragma once
 
 #include <string>
 #include <vector>
@@ skipping 65 matching lines @@
   int type_mask() const { return type_mask_; }
 
   // The index in the NavigationController. If this is -1, it means this
   // TabNavigation is bogus.
   //
   // This is used when determining the selected TabNavigation and only useful
   // by BaseSessionService and SessionService.
   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(
       Profile* profile,
       const std::vector<TabNavigation>& navigations,
       std::vector<NavigationEntry*>* entries);
 
  private:
   friend class BaseSessionService;
 
   GURL virtual_url_;
   GURL referrer_;
   string16 title_;
   std::string state_;
   PageTransition::Type transition_;
   int type_mask_;
+  std::string extra_headers_;
 
   int index_;
 };
 
 // SessionTab ----------------------------------------------------------------
 
 // SessionTab corresponds to a NavigationController.
 struct SessionTab {
   SessionTab();
   ~SessionTab();
@@ skipping 90 matching lines @@
 struct SyncedSession {
   SyncedSession();
   ~SyncedSession();
 
   // Unique tag for each session.
   std::string session_tag;
   std::vector<SessionWindow*> windows;
 };
 
 #endif  // CHROME_BROWSER_SESSIONS_SESSION_TYPES_H_