Report nav timing 2 instance as soon as it's requested.

third_party/WebKit/Source/core/loader/WorkerThreadableLoader.cpp

 /*
  * Copyright (C) 2009, 2010 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 395 matching lines @@
   if (!m_client)
     return;
   m_client->didDownloadData(dataLength);
 }
 
 void WorkerThreadableLoader::didReceiveResourceTiming(
     std::unique_ptr<CrossThreadResourceTimingInfoData> timingData) {
   DCHECK(!isMainThread());
   if (!m_client)
     return;
-  std::unique_ptr<ResourceTimingInfo> info(
+  RefPtr<ResourceTimingInfo> info(
       ResourceTimingInfo::adopt(std::move(timingData)));
   WorkerGlobalScopePerformance::performance(*m_workerGlobalScope)
       ->addResourceTiming(*info);
   m_client->didReceiveResourceTiming(*info);
 }
 
 DEFINE_TRACE(WorkerThreadableLoader) {
   visitor->trace(m_workerGlobalScope);
   ThreadableLoader::trace(visitor);
 }
@@ skipping 238 matching lines @@
     const ResourceLoaderOptions& originalResourceLoaderOptions) {
   DCHECK(isMainThread());
   ResourceLoaderOptions resourceLoaderOptions = originalResourceLoaderOptions;
   resourceLoaderOptions.requestInitiatorContext = WorkerContext;
   m_mainThreadLoader = DocumentThreadableLoader::create(document, this, options,
                                                         resourceLoaderOptions);
   m_mainThreadLoader->start(ResourceRequest(request.get()));
 }
 
 }  // namespace blink