Handle redirects with NULL headers in PluginURLFetcher

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/plugin_host.h"
 #include "content/child/npapi/plugin_instance.h"
@@ skipping 195 matching lines @@
   if (is_plugin_src_load_ &&
       !plugin_stream_->instance()->webplugin()->CheckIfRunInsecureContent(
           new_url)) {
     plugin_stream_->DidFail(resource_id_);  // That will delete |this|.
     return false;
   }
 
   // It's unfortunate that this logic of when a redirect's method changes is
   // in url_request.cc, but weburlloader_impl.cc and this file have to duplicate
   // it instead of passing that information.
-  int response_code = info.headers->response_code();
+  int response_code;
+  if (info.headers) {
+    response_code = info.headers->response_code();
+  } else {
+    // A redirect may have NULL headers if it came from URLRequestRedirectJob.
+    //
+    // TODO(davidben): Get the actual response code from the browser. Either
+    // fake enough of headers to have a response code or pass it down as part of
+    // https://crbug.com/384609.
+    response_code = 307;
+  }
   method_ = net::URLRequest::ComputeMethodForRedirect(method_, response_code);
   GURL old_url = url_;
   url_ = new_url;
   first_party_for_cookies_ = new_first_party_for_cookies;
 
   // If the plugin does not participate in url redirect notifications then just
   // block cross origin 307 POST redirects.
   if (!notify_redirects_) {
     if (response_code == 307 && method_ == "POST" &&
         old_url.GetOrigin() != new_url.GetOrigin()) {
@@ skipping 144 matching lines @@
   }
 
   if (error_code == net::OK) {
     plugin_stream_->DidFinishLoading(resource_id_);
   } else {
     plugin_stream_->DidFail(resource_id_);
   }
 }
 
 }  // namespace content