Keep track of how many documents had a resource intercepted by foreign fetch.

content/child/web_url_loader_impl.cc

 // Copyright 2014 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/web_url_loader_impl.h"
 
 #include <stdint.h>
 
 #include <algorithm>
 #include <memory>
@@ skipping 943 matching lines @@
   response->setWasCached(!info.load_timing.request_start_time.is_null() &&
       info.response_time < info.load_timing.request_start_time);
   response->setRemoteIPAddress(
       WebString::fromUTF8(info.socket_address.HostForURL()));
   response->setRemotePort(info.socket_address.port());
   response->setConnectionID(info.load_timing.socket_log_id);
   response->setConnectionReused(info.load_timing.socket_reused);
   response->setDownloadFilePath(info.download_file_path.AsUTF16Unsafe());
   response->setWasFetchedViaSPDY(info.was_fetched_via_spdy);
   response->setWasFetchedViaServiceWorker(info.was_fetched_via_service_worker);
+  response->setWasFetchedViaForeignFetch(info.was_fetched_via_foreign_fetch);
   response->setWasFallbackRequiredByServiceWorker(
       info.was_fallback_required_by_service_worker);
   response->setServiceWorkerResponseType(info.response_type_via_service_worker);
   response->setOriginalURLViaServiceWorker(
       info.original_url_via_service_worker);
   response->setCacheStorageCacheName(
       info.is_in_cache_storage
           ? blink::WebString::fromUTF8(info.cache_storage_cache_name)
           : blink::WebString());
   blink::WebVector<blink::WebString> cors_exposed_header_names(
@@ skipping 238 matching lines @@
     response->clearHTTPHeaderField(webStringName);
     while (response_headers->EnumerateHeader(&iterator, name, &value)) {
       response->addHTTPHeaderField(webStringName,
                                    WebString::fromLatin1(value));
     }
   }
   return true;
 }
 
 }  // namespace content