Change NavigationController::LoadURL to take a Referrer class instead of a GURL as referrer

chrome/browser/tabs/tab_strip_model_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 "chrome/browser/tabs/tab_strip_model.h"
 
 #include <map>
 #include <string>
 
 #include "base/file_path.h"
@@ skipping 151 matching lines @@
         tab_contents->render_view_host()->site_instance(), MSG_ROUTING_NONE,
         NULL, NULL);
     EXPECT_EQ(retval->tab_contents()->GetRenderProcessHost(),
               tab_contents->GetRenderProcessHost());
     return retval;
   }
 
   // Forwards a URL "load" request through to our dummy TabContents
   // implementation.
   void LoadURL(TabContents* con, const std::wstring& url) {
-    controller().LoadURL(GURL(WideToUTF16(url)), GURL(),
+    controller().LoadURL(GURL(WideToUTF16(url)), content::Referrer(),
                          content::PAGE_TRANSITION_LINK, std::string());
   }
 
   void GoBack(TabContents* contents) {
     controller().GoBack();
   }
 
   void GoForward(TabContents* contents) {
     controller().GoForward();
   }
@@ skipping 2192 matching lines @@
   ASSERT_EQ(1, observer.GetStateCount());
   MockTabStripModelObserver::State s(
       contents2, 1, MockTabStripModelObserver::SELECT);
   s.src_contents = contents2;
   s.src_index = 1;
   s.user_gesture = false;
   EXPECT_TRUE(observer.StateEquals(0, s));
   strip.RemoveObserver(&observer);
   strip.CloseAllTabs();
 }