Enable ParseHTMLOnMainThread on TOT

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 214 matching lines @@
 
   std::unique_ptr<HTMLPreloadScanner> createPreloadScanner();
 
   // Let the given HTMLPreloadScanner scan the input it has, and then preloads
   // resources using the resulting PreloadRequests and |m_preloader|.
   void scanAndPreload(HTMLPreloadScanner*);
   void fetchQueuedPreloads();
 
   void evaluateAndPreloadScriptForDocumentWrite(const String& source);
 
-  // Temporary enum for the ParseHTMLOnMainThread experiment. This is used to
-  // annotate whether a given task should post a task or not on the main thread
-  // if the lookahead parser is living on the main thread.
-  enum LookaheadParserTaskSynchrony {
-    Synchronous,
-    Asynchronous,
-  };
-
-  // Setting |synchronyPolicy| to Synchronous will just call the function with
-  // the given parameters. Note, this method is completely temporary as we need
-  // to maintain both threading implementations until the ParseHTMLOnMainThread
-  // experiment finishes.
-  template <typename FunctionType, typename... Ps>
-  void postTaskToLookaheadParser(LookaheadParserTaskSynchrony synchronyPolicy,
-                                 FunctionType,
-                                 Ps&&... parameters);
-
   HTMLToken& token() { return *m_token; }
 
   HTMLParserOptions m_options;
   HTMLInputStream m_input;
   RefPtr<HTMLParserReentryPermit> m_reentryPermit;
 
   std::unique_ptr<HTMLToken> m_token;
   std::unique_ptr<HTMLTokenizer> m_tokenizer;
   Member<HTMLParserScriptRunner> m_scriptRunner;
   Member<HTMLTreeBuilder> m_treeBuilder;
@@ skipping 40 matching lines @@
   unsigned m_pumpSpeculationsSessionNestingLevel;
   bool m_isParsingAtLineNumber;
   bool m_triedLoadingLinkHeaders;
   bool m_addedPendingStylesheetInBody;
   bool m_isWaitingForStylesheets;
 };
 
 }  // namespace blink
 
 #endif  // HTMLDocumentParser_h