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

content/browser/tab_contents/tab_contents_delegate.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 "content/browser/tab_contents/tab_contents_delegate.h"
 
 #include "base/compiler_specific.h"
 #include "base/logging.h"
 #include "base/memory/singleton.h"
 #include "content/browser/javascript_dialogs.h"
@@ skipping 16 matching lines @@
 
 TabContents* TabContentsDelegate::OpenURLFromTab(TabContents* source,
                                                  const OpenURLParams& params) {
   return NULL;
 }
 
 void TabContentsDelegate::NavigationStateChanged(const TabContents* source,
                                                  unsigned changed_flags) {
 }
 
-std::string TabContentsDelegate::GetNavigationHeaders(const GURL& url) {
-  return std::string();
+void TabContentsDelegate::AddNavigationHeaders(const GURL& url,
+                                               std::string* headers) {
 }
 
 void TabContentsDelegate::AddNewContents(TabContents* source,
                                          TabContents* new_contents,
                                          WindowOpenDisposition disposition,
                                          const gfx::Rect& initial_pos,
                                          bool user_gesture) {
 }
 
 void TabContentsDelegate::ActivateContents(TabContents* contents) {
@@ skipping 277 matching lines @@
 
 void TabContentsDelegate::Attach(TabContents* tab_contents) {
   DCHECK(attached_contents_.find(tab_contents) == attached_contents_.end());
   attached_contents_.insert(tab_contents);
 }
 
 void TabContentsDelegate::Detach(TabContents* tab_contents) {
   DCHECK(attached_contents_.find(tab_contents) != attached_contents_.end());
   attached_contents_.erase(tab_contents);
 }