Plumb the referrer throughout the OpenURL APIs....

chrome/browser/navigation_entry.cc

 // Copyright (c) 2006-2008 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 "chrome/browser/navigation_entry.h"
 
 #include "chrome/common/resource_bundle.h"
 
 // Use this to get a new unique ID for a NavigationEntry during construction.
 // The returned ID is guaranteed to be nonzero (which is the "no ID" indicator).
@@ skipping 23 matching lines @@
       page_id_(-1),
       transition_type_(PageTransition::LINK),
       has_post_data_(false),
       restored_(false) {
 }
 
 NavigationEntry::NavigationEntry(TabContentsType type,
                                  SiteInstance* instance,
                                  int page_id,
                                  const GURL& url,
+                                 const GURL& referrer,
                                  const std::wstring& title,
                                  PageTransition::Type transition_type)
     : unique_id_(GetUniqueID()),
       tab_type_(type),
       site_instance_(instance),
       page_type_(NORMAL_PAGE),
       url_(url),
+      referrer_(referrer),
       title_(title),
       page_id_(page_id),
       transition_type_(transition_type),
       has_post_data_(false),
       restored_(false) {
 }
 
 const std::wstring& NavigationEntry::GetTitleForDisplay() {
   if (title_.empty())
     return url_as_string_;
   return title_;
 }