Revert of Implement WTF::WeakPtr in terms of base::WeakPtr

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

 /*
  * 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 17 matching lines @@
 #include "core/HTMLNames.h"
 #include "core/html/parser/HTMLDocumentParser.h"
 #include "core/html/parser/TextResourceDecoder.h"
 #include "core/html/parser/XSSAuditor.h"
 #include "platform/CrossThreadFunctional.h"
 #include "platform/Histogram.h"
 #include "platform/TraceEvent.h"
 #include "public/platform/Platform.h"
 #include "public/platform/WebTaskRunner.h"
 #include "wtf/CurrentTime.h"
-#include "wtf/Functional.h"
 #include "wtf/PtrUtil.h"
 #include "wtf/text/TextPosition.h"
 #include <memory>
 
 namespace blink {
 
 // On a network with high latency and high bandwidth, using a device
 // with a fast CPU, we could end up speculatively tokenizing
 // the whole document, well ahead of when the main-thread actually needs it.
 // This is a waste of memory (and potentially time if the speculation fails).
@@ skipping 29 matching lines @@
 }
 
 static void checkThatXSSInfosAreSafeToSendToAnotherThread(const XSSInfoStream& infos)
 {
     for (size_t i = 0; i < infos.size(); ++i)
         ASSERT(infos[i]->isSafeToSendToAnotherThread());
 }
 
 #endif
 
-WeakPtr<BackgroundHTMLParser> BackgroundHTMLParser::create(std::unique_ptr<Configuration> config, std::unique_ptr<WebTaskRunner> loadingTaskRunner)
+void BackgroundHTMLParser::start(PassRefPtr<WeakReference<BackgroundHTMLParser>> reference, std::unique_ptr<Configuration> config, const KURL& documentURL, std::unique_ptr<CachedDocumentParameters> cachedDocumentParameters, const MediaValuesCached::MediaValuesCachedData& mediaValuesCachedData, std::unique_ptr<WebTaskRunner> loadingTaskRunner)
 {
-    auto* backgroundParser = new BackgroundHTMLParser(std::move(config), std::move(loadingTaskRunner));
-    return backgroundParser->m_weakFactory.createWeakPtr();
+    new BackgroundHTMLParser(reference, std::move(config), documentURL, std::move(cachedDocumentParameters), mediaValuesCachedData, std::move(loadingTaskRunner));
+    // Caller must free by calling stop().
 }
 
-void BackgroundHTMLParser::init(const KURL& documentURL, std::unique_ptr<CachedDocumentParameters> cachedDocumentParameters, const MediaValuesCached::MediaValuesCachedData& mediaValuesCachedData)
-{
-    m_preloadScanner.reset(new TokenPreloadScanner(documentURL, std::move(cachedDocumentParameters), mediaValuesCachedData));
-}
-
-
 BackgroundHTMLParser::Configuration::Configuration()
     : outstandingTokenLimit(defaultOutstandingTokenLimit)
     , pendingTokenLimit(defaultPendingTokenLimit)
     , shouldCoalesceChunks(false)
 {
 }
 
-BackgroundHTMLParser::BackgroundHTMLParser(std::unique_ptr<Configuration> config, std::unique_ptr<WebTaskRunner> loadingTaskRunner)
-    : m_weakFactory(this)
+BackgroundHTMLParser::BackgroundHTMLParser(PassRefPtr<WeakReference<BackgroundHTMLParser>> reference, std::unique_ptr<Configuration> config, const KURL& documentURL, std::unique_ptr<CachedDocumentParameters> cachedDocumentParameters, const MediaValuesCached::MediaValuesCachedData& mediaValuesCachedData, std::unique_ptr<WebTaskRunner> loadingTaskRunner)
+    : m_weakFactory(reference, this)
     , m_token(wrapUnique(new HTMLToken))
     , m_tokenizer(HTMLTokenizer::create(config->options))
     , m_treeBuilderSimulator(config->options)
     , m_options(config->options)
     , m_outstandingTokenLimit(config->outstandingTokenLimit)
     , m_parser(config->parser)
     , m_pendingTokens(wrapUnique(new CompactHTMLTokenStream))
     , m_pendingTokenLimit(config->pendingTokenLimit)
     , m_xssAuditor(std::move(config->xssAuditor))
+    , m_preloadScanner(wrapUnique(new TokenPreloadScanner(documentURL, std::move(cachedDocumentParameters), mediaValuesCachedData)))
     , m_decoder(std::move(config->decoder))
     , m_loadingTaskRunner(std::move(loadingTaskRunner))
     , m_tokenizedChunkQueue(config->tokenizedChunkQueue.release())
     , m_pendingCSPMetaTokenIndex(HTMLDocumentParser::TokenizedChunk::noPendingToken)
     , m_startingScript(false)
     , m_lastBytesReceivedTime(0.0)
     , m_shouldCoalesceChunks(config->shouldCoalesceChunks)
 {
     ASSERT(m_outstandingTokenLimit > 0);
     ASSERT(m_pendingTokenLimit > 0);
@@ skipping 230 matching lines @@
 void BackgroundHTMLParser::runOnMainThread(FunctionType function, Ps&&... parameters)
 {
     if (isMainThread()) {
         (*WTF::bind(function, std::forward<Ps>(parameters)...))();
     } else {
         m_loadingTaskRunner->postTask(BLINK_FROM_HERE, crossThreadBind(function, std::forward<Ps>(parameters)...));
     }
 }
 
 } // namespace blink