Make WebTaskRunner ThreadSafeRefCounted

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

 /*
  * 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 240 matching lines @@
 
   std::unique_ptr<HTMLToken> m_token;
   std::unique_ptr<HTMLTokenizer> m_tokenizer;
   Member<HTMLParserScriptRunner> m_scriptRunner;
   Member<HTMLTreeBuilder> m_treeBuilder;
 
   std::unique_ptr<HTMLPreloadScanner> m_preloadScanner;
   // A scanner used only for input provided to the insert() method.
   std::unique_ptr<HTMLPreloadScanner> m_insertionPreloadScanner;
 
-  std::unique_ptr<WebTaskRunner> m_loadingTaskRunner;
+  RefPtr<WebTaskRunner> m_loadingTaskRunner;
   Member<HTMLParserScheduler> m_parserScheduler;
   HTMLSourceTracker m_sourceTracker;
   TextPosition m_textPosition;
   XSSAuditor m_xssAuditor;
   XSSAuditorDelegate m_xssAuditorDelegate;
 
   // FIXME: m_lastChunkBeforeScript, m_tokenizer, m_token, and m_input should be
   // combined into a single state object so they can be set and cleared together
   // and passed between threads together.
   std::unique_ptr<TokenizedChunk> m_lastChunkBeforeScript;
@@ skipping 20 matching lines @@
   bool m_tasksWereSuspended;
   unsigned m_pumpSessionNestingLevel;
   unsigned m_pumpSpeculationsSessionNestingLevel;
   bool m_isParsingAtLineNumber;
   bool m_triedLoadingLinkHeaders;
 };
 
 }  // namespace blink
 
 #endif  // HTMLDocumentParser_h