Use content::Referrer to pass around referrers in the plugin code

content/plugin/webplugin_delegate_stub.cc

 // Copyright (c) 2012 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/plugin/webplugin_delegate_stub.h"
 
 #include "build/build_config.h"
 
 #include "base/bind.h"
 #include "base/command_line.h"
@@ skipping 420 matching lines @@
   if (params.post_data.size())
     data = &params.post_data[0];
 
   delegate_->FetchURL(params.resource_id,
                       params.notify_id,
                       params.url,
                       params.first_party_for_cookies,
                       params.method,
                       data,
                       static_cast<unsigned int>(params.post_data.size()),
-                      params.referrer,
+                      Referrer(params.referrer, params.referrer_policy),
                       params.notify_redirect,
                       params.is_plugin_src_load,
                       channel_->renderer_id(),
                       params.render_frame_id,
                       webplugin_->host_render_view_routing_id());
 }
 
 }  // namespace content