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

content/browser/service_worker/service_worker_response_info.h

 // Copyright 2016 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.
 
 #ifndef CONTENT_BROWSER_SERVICE_WORKER_SERVICE_WORKER_RESPONSE_INFO_H_
 #define CONTENT_BROWSER_SERVICE_WORKER_SERVICE_WORKER_RESPONSE_INFO_H_
 
 #include "base/supports_user_data.h"
 #include "content/common/content_export.h"
 #include "content/common/service_worker/service_worker_types.h"
@@ skipping 15 matching lines @@
                                                bool create = false);
   static void ResetDataForRequest(net::URLRequest* request);
 
   ~ServiceWorkerResponseInfo() override;
 
   void GetExtraResponseInfo(ResourceResponseInfo* response_info) const;
   void OnPrepareToRestart(base::TimeTicks service_worker_start_time,
                           base::TimeTicks service_worker_ready_time);
   void OnStartCompleted(
       bool was_fetched_via_service_worker,
+      bool was_fetched_via_foreign_fetch,
       bool was_fallback_required,
       const GURL& original_url_via_service_worker,
       blink::WebServiceWorkerResponseType response_type_via_service_worker,
       base::TimeTicks service_worker_start_time,
       base::TimeTicks service_worker_ready_time,
       bool response_is_in_cache_storage,
       const std::string& response_cache_storage_cache_name,
       const ServiceWorkerHeaderList& cors_exposed_header_names);
   void ResetData();
 
@@ skipping 17 matching lines @@
     return response_is_in_cache_storage_;
   }
   const std::string& response_cache_storage_cache_name() const {
     return response_cache_storage_cache_name_;
   }
 
  private:
   ServiceWorkerResponseInfo();
 
   bool was_fetched_via_service_worker_ = false;
+  bool was_fetched_via_foreign_fetch_ = false;
   bool was_fallback_required_ = false;
   GURL original_url_via_service_worker_;
   blink::WebServiceWorkerResponseType response_type_via_service_worker_ =
       blink::WebServiceWorkerResponseTypeDefault;
   base::TimeTicks service_worker_start_time_;
   base::TimeTicks service_worker_ready_time_;
   bool response_is_in_cache_storage_ = false;
   std::string response_cache_storage_cache_name_;
   ServiceWorkerHeaderList cors_exposed_header_names_;
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_SERVICE_WORKER_SERVICE_WORKER_RESPONSE_INFO_H_