Replace the GURL referrer field of OpenURLParams with a content::Referrer

chrome/browser/plugin_observer.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/plugin_observer.h"
 
 #include "base/bind.h"
 #include "base/utf_string_conversions.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/content_settings/host_content_settings_map.h"
@@ skipping 333 matching lines @@
 }
 
 void PluginObserver::DidNotFindMissingPlugin(int placeholder_id,
                                              const std::string& mime_type) {
   Send(new ChromeViewMsg_DidNotFindMissingPlugin(placeholder_id));
 }
 
 void PluginObserver::InstallMissingPlugin(PluginInstaller* installer) {
   if (installer->url_for_display()) {
     tab_contents()->OpenURL(OpenURLParams(
-        installer->plugin_url(), tab_contents()->GetURL(),
+        installer->plugin_url(),
+        content::Referrer(tab_contents()->GetURL(),
+                          WebKit::WebReferrerPolicyDefault),
         NEW_FOREGROUND_TAB, content::PAGE_TRANSITION_TYPED, false));
   } else {
     NOTIMPLEMENTED();
   }
 }