Revert of Put the BackgroundHTMLParser on oilpan heap

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
  *    documentation and/or other materials provided with the distribution.
  *
  * THIS SOFTWARE IS PROVIDED BY GOOGLE INC. ``AS IS'' AND ANY
  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL GOOGLE INC. OR
  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #ifndef BackgroundHTMLParser_h
 #define BackgroundHTMLParser_h
 
-#include <memory>
 #include "core/dom/DocumentEncodingData.h"
 #include "core/html/parser/BackgroundHTMLInputStream.h"
 #include "core/html/parser/CompactHTMLToken.h"
 #include "core/html/parser/HTMLParserOptions.h"
 #include "core/html/parser/HTMLPreloadScanner.h"
 #include "core/html/parser/HTMLSourceTracker.h"
 #include "core/html/parser/HTMLTreeBuilderSimulator.h"
 #include "core/html/parser/TextResourceDecoder.h"
+#include "core/html/parser/TokenizedChunkQueue.h"
 #include "core/html/parser/XSSAuditorDelegate.h"
-#include "platform/heap/GarbageCollected.h"
 #include "wtf/WeakPtr.h"
+#include <memory>
 
 namespace blink {
 
 class HTMLDocumentParser;
 class XSSAuditor;
 class WebTaskRunner;
 
-class BackgroundHTMLParser
-    : public GarbageCollectedFinalized<BackgroundHTMLParser> {
+class BackgroundHTMLParser {
+  USING_FAST_MALLOC(BackgroundHTMLParser);
   WTF_MAKE_NONCOPYABLE(BackgroundHTMLParser);
 
  public:
   struct Configuration {
     USING_FAST_MALLOC(Configuration);
 
    public:
     Configuration();
     HTMLParserOptions options;
+    WeakPtr<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;
   };
 
-  static BackgroundHTMLParser* create(HTMLDocumentParser*,
-                                      Document&,
-                                      std::unique_ptr<Configuration>);
-  ~BackgroundHTMLParser();
-
-  DECLARE_TRACE();
+  // 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>,
+                                              RefPtr<WebTaskRunner>);
+  void init(const KURL& documentURL,
+            std::unique_ptr<CachedDocumentParameters>,
+            const MediaValuesCached::MediaValuesCachedData&);
 
   struct Checkpoint {
     USING_FAST_MALLOC(Checkpoint);
 
    public:
     WeakPtr<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>);
   void flush();
   void resumeFrom(std::unique_ptr<Checkpoint>);
   void startedChunkWithCheckpoint(HTMLInputCheckpoint);
   void finish();
+  void stop();
 
   void forcePlaintextForTextDocument();
+
  private:
-  BackgroundHTMLParser(HTMLDocumentParser*,
-                       std::unique_ptr<Configuration>,
-                       RefPtr<WebTaskRunner>,
-                       std::unique_ptr<TokenPreloadScanner>);
+  BackgroundHTMLParser(std::unique_ptr<Configuration>, RefPtr<WebTaskRunner>);
+  ~BackgroundHTMLParser();
 
   void appendDecodedBytes(const String&);
   void markEndOfFile();
   void pumpTokenizer();
 
-  void onResumeFrom(std::unique_ptr<Checkpoint>);
-  void onFinish();
-
   // Returns whether or not the HTMLDocumentParser should be notified of
   // pending chunks.
   bool queueChunkForMainThread();
   void notifyMainThreadOfNewChunks();
   void updateDocument(const String& decodedData);
 
+  template <typename FunctionType, typename... Ps>
+  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;
-  Member<HTMLDocumentParser> m_parser;
+  WeakPtr<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;
   RefPtr<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