ServiceWorker: Make a way to retrieve a service worker version id (Chromium)

content/browser/service_worker/service_worker_handle.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_handle.h"
 
 #include "content/browser/service_worker/service_worker_context_core.h"
 #include "content/browser/service_worker/service_worker_registration.h"
 #include "content/common/service_worker/service_worker_messages.h"
 #include "ipc/ipc_sender.h"
@@ skipping 94 matching lines @@
   sender_->Send(new ServiceWorkerMsg_ServiceWorkerStateChanged(
       thread_id_, handle_id_, GetWebServiceWorkerState(version)));
 }
 
 ServiceWorkerObjectInfo ServiceWorkerHandle::GetObjectInfo() {
   ServiceWorkerObjectInfo info;
   info.handle_id = handle_id_;
   info.scope = registration_->pattern();
   info.url = version_->script_url();
   info.state = GetWebServiceWorkerState(version_.get());
+  info.version_id = version_->version_id();
   return info;
 }
 
 void ServiceWorkerHandle::IncrementRefCount() {
   DCHECK_GT(ref_count_, 0);
   ++ref_count_;
 }
 
 void ServiceWorkerHandle::DecrementRefCount() {
   DCHECK_GE(ref_count_, 0);
   --ref_count_;
 }
 
 }  // namespace content