Teach URLRequest about initiator checks for First-Party-Only cookies.

content/browser/service_worker/service_worker_write_to_cache_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_write_to_cache_job.h"
 
 #include "base/bind.h"
 #include "base/callback.h"
 #include "base/strings/stringprintf.h"
 #include "base/trace_event/trace_event.h"
@@ skipping 186 matching lines @@
   return http_info_.get();
 }
 
 void ServiceWorkerWriteToCacheJob::InitNetRequest(
     int extra_load_flags) {
   DCHECK(request());
   net_request_ = request()->context()->CreateRequest(
       request()->url(), request()->priority(), this);
   net_request_->set_first_party_for_cookies(
       request()->first_party_for_cookies());
+  net_request_->set_initiator(request()->initiator());

[michaeln, 2015/10/23 23:29:50]

ditto serviceworker

   net_request_->SetReferrer(request()->referrer());
   if (extra_load_flags)
     net_request_->SetLoadFlags(net_request_->load_flags() | extra_load_flags);
 
   if (resource_type_ == RESOURCE_TYPE_SERVICE_WORKER) {
     // This will get copied into net_request_ when URLRequest::StartJob calls
     // ServiceWorkerWriteToCacheJob::SetExtraRequestHeaders.
     request()->SetExtraRequestHeaderByName("Service-Worker", "script", true);
   }
 }
@@ skipping 284 matching lines @@
   }
   return context_->storage()->CreateResponseReader(incumbent_response_id_);
 }
 
 scoped_ptr<ServiceWorkerResponseWriter>
 ServiceWorkerWriteToCacheJob::CreateCacheResponseWriter() {
   return context_->storage()->CreateResponseWriter(response_id_);
 }
 
 }  // namespace content