Make HTMLParserScheduler inherit from ActiveDOMObject

third_party/WebKit/Source/core/html/parser/HTMLParserScheduler.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
  *    documentation and/or other materials provided with the distribution.
  *
  * THIS SOFTWARE IS PROVIDED BY APPLE 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 APPLE 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 HTMLParserScheduler_h
 #define HTMLParserScheduler_h
 
+#include "core/dom/ActiveDOMObject.h"
 #include "core/html/parser/NestingLevelIncrementer.h"
 #include "platform/WebTaskRunner.h"
 #include "wtf/Allocator.h"
 #include "wtf/RefPtr.h"
 #include <memory>
 
 namespace blink {
 
+class Document;
 class HTMLDocumentParser;
 class WebTaskRunner;
 
 class PumpSession : public NestingLevelIncrementer {
   STACK_ALLOCATED();
 
  public:
   PumpSession(unsigned& nestingLevel);
   ~PumpSession();
 };
 
 class SpeculationsPumpSession : public NestingLevelIncrementer {
   STACK_ALLOCATED();
 
  public:
   SpeculationsPumpSession(unsigned& nestingLevel);
   ~SpeculationsPumpSession();
 
   double elapsedTime() const;
   void addedElementTokens(size_t count);
   size_t processedElementTokens() const { return m_processedElementTokens; }
 
  private:
   double m_startTime;
   size_t m_processedElementTokens;
 };
 
 class HTMLParserScheduler final
-    : public GarbageCollectedFinalized<HTMLParserScheduler> {
+    : public GarbageCollectedFinalized<HTMLParserScheduler>,
+      public ActiveDOMObject {
   WTF_MAKE_NONCOPYABLE(HTMLParserScheduler);
+  USING_GARBAGE_COLLECTED_MIXIN(HTMLParserScheduler);
 
  public:
-  static HTMLParserScheduler* create(HTMLDocumentParser* parser,
-                                     WebTaskRunner* loadingTaskRunner) {
-    return new HTMLParserScheduler(parser, loadingTaskRunner);
-  }
+  static HTMLParserScheduler* create(Document&,
+                                     HTMLDocumentParser*,
+                                     WebTaskRunner*);
   ~HTMLParserScheduler();
 
   bool isScheduledForResume() const;
   void scheduleForResume();
   bool yieldIfNeeded(const SpeculationsPumpSession&, bool startingScript);
 
-  /**
-     * Can only be called if this scheduler is suspended. If this is called,
-     * then after the scheduler is resumed by calling resume(), this call
-     * ensures that HTMLDocumentParser::resumeAfterYield will be called. Used to
-     * signal this scheduler that the background html parser sent chunks to
-     * HTMLDocumentParser while it was suspended.
-     */
-  void forceResumeAfterYield();
-
-  void suspend();
-  void resume();
+  void suspend() final;
+  void resume() final;
 
   void detach();  // Clear active tasks if any.
 
   DECLARE_TRACE();
 
  private:
-  HTMLParserScheduler(HTMLDocumentParser*, WebTaskRunner*);
+  HTMLParserScheduler(Document&, HTMLDocumentParser*, WebTaskRunner*);
 
   bool shouldYield(const SpeculationsPumpSession&, bool startingScript) const;
   void continueParsing();
 
   Member<HTMLDocumentParser> m_parser;
   std::unique_ptr<WebTaskRunner> m_loadingTaskRunner;
 
   TaskHandle m_cancellableContinueParseTaskHandle;
   bool m_isSuspendedWithActiveTimer;
 };
 
 }  // namespace blink
 
 #endif