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

chrome/browser/ui/views/constrained_html_delegate_gtk.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/ui/webui/constrained_html_ui.h"
 
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/ui/gtk/constrained_window_gtk.h"
 #include "chrome/browser/ui/tab_contents/tab_contents_wrapper.h"
 #include "chrome/browser/ui/views/tab_contents/tab_contents_container.h"
@@ skipping 85 matching lines @@
       release_tab_on_close_(false) {
   CHECK(delegate);
   TabContents* tab_contents =
       new TabContents(profile, NULL, MSG_ROUTING_NONE, NULL, NULL);
   html_tab_contents_.reset(new TabContentsWrapper(tab_contents));
   tab_contents->set_delegate(this);
 
   // Set |this| as a property so the ConstrainedHtmlUI can retrieve it.
   ConstrainedHtmlUI::GetPropertyAccessor().SetProperty(
       tab_contents->property_bag(), this);
-  tab_contents->controller().LoadURL(delegate->GetDialogContentURL(), GURL(),
+  tab_contents->controller().LoadURL(delegate->GetDialogContentURL(),
+                                     content::Referrer(),
                                      content::PAGE_TRANSITION_START_PAGE,
                                      std::string());
 
   views::Widget::InitParams params(views::Widget::InitParams::TYPE_CONTROL);
   params.native_widget = this;
   GetWidget()->Init(params);
 
   tab_container_ = new TabContentsContainer;
   GetWidget()->SetContentsView(tab_container_);
   tab_container_->ChangeTabContents(html_tab_contents_->tab_contents());
@@ skipping 24 matching lines @@
     Profile* profile,
     HtmlDialogUIDelegate* delegate,
     TabContentsWrapper* wrapper) {
   ConstrainedHtmlDelegateGtk* constrained_delegate =
       new ConstrainedHtmlDelegateGtk(profile, delegate);
   ConstrainedWindow* constrained_window =
       new ConstrainedWindowGtk(wrapper, constrained_delegate);
   constrained_delegate->set_window(constrained_window);
   return constrained_delegate;
 }