Introduce an injection point to configure the internal pointer of WeakPtr

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

 /*
  * Copyright (C) 2013 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 36 matching lines @@
 
 class BackgroundHTMLParser {
     USING_FAST_MALLOC(BackgroundHTMLParser);
     WTF_MAKE_NONCOPYABLE(BackgroundHTMLParser);
 public:
     struct Configuration {
         USING_FAST_MALLOC(Configuration);
     public:
         Configuration();
         HTMLParserOptions options;
-        WeakPtr<HTMLDocumentParser> parser;
+        RevocableCrossThreadWeakPersistent<HTMLDocumentParser> parser;
         std::unique_ptr<XSSAuditor> xssAuditor;
         std::unique_ptr<TextResourceDecoder> decoder;
         RefPtr<TokenizedChunkQueue> tokenizedChunkQueue;
         // outstandingTokenLimit must be greater than or equal to
         // pendingTokenLimit
         size_t outstandingTokenLimit;
         size_t pendingTokenLimit;
         bool shouldCoalesceChunks;
     };
 
     // The returned BackgroundHTMLParser should only be used on the parser
     // thread: it must first be initialized by calling init(), and free by
     // calling stop().
     static WeakPtr<BackgroundHTMLParser> create(std::unique_ptr<Configuration>, std::unique_ptr<WebTaskRunner>);
     void init(const KURL& documentURL, std::unique_ptr<CachedDocumentParameters>, const MediaValuesCached::MediaValuesCachedData&);
 
     struct Checkpoint {
         USING_FAST_MALLOC(Checkpoint);
     public:
-        WeakPtr<HTMLDocumentParser> parser;
+        RevocableCrossThreadWeakPersistent<HTMLDocumentParser> parser;
         std::unique_ptr<HTMLToken> token;
         std::unique_ptr<HTMLTokenizer> tokenizer;
         HTMLTreeBuilderSimulator::State treeBuilderState;
         HTMLInputCheckpoint inputCheckpoint;
         TokenPreloadScannerCheckpoint preloadScannerCheckpoint;
         String unparsedInput;
     };
 
     void appendRawBytesFromMainThread(std::unique_ptr<Vector<char>>, double bytesReceivedTime);
     void setDecoder(std::unique_ptr<TextResourceDecoder>);
@@ skipping 23 matching lines @@
     void runOnMainThread(FunctionType, Ps&&...);
 
     WeakPtrFactory<BackgroundHTMLParser> m_weakFactory;
     BackgroundHTMLInputStream m_input;
     HTMLSourceTracker m_sourceTracker;
     std::unique_ptr<HTMLToken> m_token;
     std::unique_ptr<HTMLTokenizer> m_tokenizer;
     HTMLTreeBuilderSimulator m_treeBuilderSimulator;
     HTMLParserOptions m_options;
     const size_t m_outstandingTokenLimit;
-    WeakPtr<HTMLDocumentParser> m_parser;
+    RevocableCrossThreadWeakPersistent<HTMLDocumentParser> m_parser;
 
     std::unique_ptr<CompactHTMLTokenStream> m_pendingTokens;
     const size_t m_pendingTokenLimit;
     PreloadRequestStream m_pendingPreloads;
     // Indices into |m_pendingTokens|.
     Vector<int> m_likelyDocumentWriteScriptIndices;
     ViewportDescriptionWrapper m_viewportDescription;
     XSSInfoStream m_pendingXSSInfos;
 
     std::unique_ptr<XSSAuditor> m_xssAuditor;
     std::unique_ptr<TokenPreloadScanner> m_preloadScanner;
     std::unique_ptr<TextResourceDecoder> m_decoder;
     DocumentEncodingData m_lastSeenEncodingData;
     std::unique_ptr<WebTaskRunner> m_loadingTaskRunner;
     RefPtr<TokenizedChunkQueue> m_tokenizedChunkQueue;
 
     // Index into |m_pendingTokens| of the last <meta> csp token found. Will be
     // |TokenizedChunk::noPendingToken| if none have been found.
     int m_pendingCSPMetaTokenIndex;
 
     bool m_startingScript;
     double m_lastBytesReceivedTime;
     bool m_shouldCoalesceChunks;
 };
 
 } // namespace blink
 
 #endif