Make WebTaskRunner ThreadSafeRefCounted

third_party/WebKit/Source/core/html/parser/HTMLDocumentParser.cpp

 /*
  * Copyright (C) 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:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 115 matching lines @@
     : ScriptableDocumentParser(document, contentPolicy),
       m_options(&document),
       m_reentryPermit(HTMLParserReentryPermit::create()),
       m_token(syncPolicy == ForceSynchronousParsing
                   ? WTF::wrapUnique(new HTMLToken)
                   : nullptr),
       m_tokenizer(syncPolicy == ForceSynchronousParsing
                       ? HTMLTokenizer::create(m_options)
                       : nullptr),
       m_loadingTaskRunner(
-          TaskRunnerHelper::get(TaskType::Networking, &document)->clone()),
+          TaskRunnerHelper::get(TaskType::Networking, &document)),
       m_parserScheduler(
           syncPolicy == AllowAsynchronousParsing
               ? HTMLParserScheduler::create(this, m_loadingTaskRunner.get())
               : nullptr),
       m_xssAuditorDelegate(&document),
       m_weakFactory(this),
       m_preloader(HTMLResourcePreloader::create(document)),
       m_tokenizedChunkQueue(TokenizedChunkQueue::create()),
       m_evaluator(DocumentWriteEvaluator::create(document)),
       m_pendingCSPMetaToken(nullptr),
@@ skipping 697 matching lines @@
           document()->settings()->getBackgroundHtmlParserPendingTokenLimit();
     }
     config->shouldCoalesceChunks =
         document()->settings()->getParseHTMLOnMainThreadCoalesceChunks();
   }
 
   ASSERT(config->xssAuditor->isSafeToSendToAnotherThread());
 
   // The background parser is created on the main thread, but may otherwise
   // only be used from the parser thread.
-  m_backgroundParser = BackgroundHTMLParser::create(
-      std::move(config), m_loadingTaskRunner->clone());
+  m_backgroundParser =
+      BackgroundHTMLParser::create(std::move(config), m_loadingTaskRunner);
   // TODO(csharrison): This is a hack to initialize MediaValuesCached on the
   // correct thread. We should get rid of it.
   postTaskToLookaheadParser(
       Synchronous, &BackgroundHTMLParser::init, m_backgroundParser,
       document()->url(),
       WTF::passed(CachedDocumentParameters::create(document())),
       MediaValuesCached::MediaValuesCachedData(*document()));
 }
 
 void HTMLDocumentParser::stopBackgroundParser() {
@@ skipping 450 matching lines @@
     case Asynchronous:
       m_loadingTaskRunner->postTask(
           BLINK_FROM_HERE,
           WTF::bind(function, std::forward<Ps>(parameters)...));
       return;
   }
   NOTREACHED();
 }
 
 }  // namespace blink