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

content/browser/tab_contents/navigation_controller_unittest.cc

 // 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.
 
 #include "base/file_util.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/path_service.h"
 #include "base/stl_util.h"
 #include "base/string_util.h"
 #include "base/utf_string_conversions.h"
@@ skipping 1420 matching lines @@
 }
 
 // Tests that we can do a restore and navigate to the restored entries and
 // everything is updated properly. This can be tricky since there is no
 // SiteInstance for the entries created initially.
 TEST_F(NavigationControllerTest, RestoreNavigate) {
   // Create a NavigationController with a restored set of tabs.
   GURL url("http://foo");
   std::vector<NavigationEntry*> entries;
   NavigationEntry* entry = NavigationController::CreateNavigationEntry(
-      url, GURL(), PageTransition::RELOAD, profile());
+      url, GURL(), PageTransition::RELOAD, std::string(), profile());
   entry->set_page_id(0);
   entry->set_title(ASCIIToUTF16("Title"));
   entry->set_content_state("state");
   entries.push_back(entry);
   TabContents our_contents(profile(), NULL, MSG_ROUTING_NONE, NULL, NULL);
   NavigationController& our_controller = our_contents.controller();
   our_controller.Restore(0, true, &entries);
   ASSERT_EQ(0u, entries.size());
 
   // Before navigating to the restored entry, it should have a restore_type
@@ skipping 37 matching lines @@
             our_controller.GetEntryAtIndex(0)->restore_type());
 }
 
 // Tests that we can still navigate to a restored entry after a different
 // navigation fails and clears the pending entry.  http://crbug.com/90085
 TEST_F(NavigationControllerTest, RestoreNavigateAfterFailure) {
   // Create a NavigationController with a restored set of tabs.
   GURL url("http://foo");
   std::vector<NavigationEntry*> entries;
   NavigationEntry* entry = NavigationController::CreateNavigationEntry(
-      url, GURL(), PageTransition::RELOAD, profile());
+      url, GURL(), PageTransition::RELOAD, std::string(), profile());
   entry->set_page_id(0);
   entry->set_title(ASCIIToUTF16("Title"));
   entry->set_content_state("state");
   entries.push_back(entry);
   TabContents our_contents(profile(), NULL, MSG_ROUTING_NONE, NULL, NULL);
   NavigationController& our_controller = our_contents.controller();
   our_controller.Restore(0, true, &entries);
   ASSERT_EQ(0u, entries.size());
 
   // Before navigating to the restored entry, it should have a restore_type
@@ skipping 874 matching lines @@
   TabNavigation nav(0, url0, GURL(), string16(),
                     webkit_glue::CreateHistoryStateForURL(url0),
                     PageTransition::LINK);
   session_helper_.AssertNavigationEquals(nav,
                                          windows_[0]->tabs[0]->navigations[0]);
   nav.set_url(url2);
   session_helper_.AssertNavigationEquals(nav,
                                          windows_[0]->tabs[0]->navigations[1]);
 }
 */