Don't try to guess the referrer policy, but use the one associated with the request

content/child/npapi/plugin_url_fetcher.cc

 // Copyright (c) 2013 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/child/npapi/plugin_url_fetcher.h"
 
 #include "base/memory/scoped_ptr.h"
 #include "content/child/child_thread.h"
 #include "content/child/npapi/webplugin.h"
 #include "content/child/npapi/plugin_host.h"
@@ skipping 88 matching lines @@
   webkit_glue::ResourceLoaderBridge::RequestInfo request_info;
   request_info.method = method;
   request_info.url = url;
   request_info.first_party_for_cookies = first_party_for_cookies;
   request_info.referrer = referrer;
   request_info.load_flags = net::LOAD_NORMAL;
   request_info.requestor_pid = origin_pid;
   request_info.request_type = ResourceType::OBJECT;
   request_info.routing_id = render_view_id;
 
-  RequestExtraData extra_data(blink::WebReferrerPolicyDefault,
-                              blink::WebPageVisibilityStateVisible,
+  RequestExtraData extra_data(blink::WebPageVisibilityStateVisible,
                               base::string16(),
                               false,
                               render_frame_id,
                               false,
                               -1,
                               GURL(),
                               false,
                               -1,
                               true,
                               PAGE_TRANSITION_LINK,
@@ skipping 229 matching lines @@
   }
 
   if (error_code == net::OK) {
     plugin_stream_->DidFinishLoading(resource_id_);
   } else {
     plugin_stream_->DidFail(resource_id_);
   }
 }
 
 }  // namespace content