[ServiceWorker] Propagates ServiceWorker fetched response's URL and wasFetchedViaServiceWorker flag.

content/browser/service_worker/service_worker_url_request_job.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/browser/service_worker/service_worker_url_request_job.h"
 
 #include "base/bind.h"
 #include "base/strings/stringprintf.h"
 #include "content/browser/service_worker/service_worker_fetch_dispatcher.h"
 #include "content/browser/service_worker/service_worker_provider_host.h"
@@ skipping 240 matching lines @@
     if (!blob_data_handle) {
       // The renderer gave us a bad blob UUID.
       DeliverErrorResponse();
       return;
     }
     blob_request_ = webkit_blob::BlobProtocolHandler::CreateBlobRequest(
         blob_data_handle.Pass(), request()->context(), this);
     blob_request_->Start();
   }
 
+  response_url_ = response.url;

[Mike West, 2014/07/09 12:14:46]

What's the lifetime of the RequestJob? Do we need to worry about resetting this
value after the request completes, or do we just destroy the object?

[horo, 2014/07/10 06:17:56]

ServiceWorkerURLRequestJob is created per a request in
ServiceWorkerControlleeRequestHandler::MaybeCreateJob().
So we don't need to worry about resetting the value.

   CreateResponseHeader(
       response.status_code, response.status_text, response.headers);
   if (!blob_request_)
     CommitResponseHeader();
 }
 
 void ServiceWorkerURLRequestJob::CreateResponseHeader(
     int status_code,
     const std::string& status_text,
     const std::map<std::string, std::string>& headers) {
@@ skipping 15 matching lines @@
     header.append(it->first);
     header.append(": ");
     header.append(it->second);
     http_response_headers_->AddHeader(header);
   }
 }
 
 void ServiceWorkerURLRequestJob::CommitResponseHeader() {
   http_response_info_.reset(new net::HttpResponseInfo());
   http_response_info_->headers.swap(http_response_headers_);
+  http_response_info_->was_fetched_via_service_worker = true;
+  http_response_info_->original_url_via_service_worker = response_url_;
   NotifyHeadersComplete();
 }
 
 void ServiceWorkerURLRequestJob::DeliverErrorResponse() {
   // TODO(falken): Print an error to the console of the ServiceWorker and of
   // the requesting page.
   CreateResponseHeader(500,
                        "Service Worker Response Error",
                        std::map<std::string, std::string>());
   CommitResponseHeader();
 }
 
 }  // namespace content