Remove EventSender from HTMLSourceElement

third_party/WebKit/Source/core/html/HTMLSourceElement.h

 /*
  * Copyright (C) 2007, 2008, 2010 Apple 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 14 matching lines @@
 
 #ifndef HTMLSourceElement_h
 #define HTMLSourceElement_h
 
 #include "core/css/MediaQueryListListener.h"
 #include "core/html/HTMLElement.h"
 #include "platform/Timer.h"
 
 namespace blink {
 
-template <typename T>
-class EventSender;
-using SourceEventSender = EventSender<HTMLSourceElement>;
-
 class HTMLSourceElement final : public HTMLElement {
   DEFINE_WRAPPERTYPEINFO();
 
  public:
   class Listener;
 
   DECLARE_NODE_FACTORY(HTMLSourceElement);
   ~HTMLSourceElement() override;
 
   const AtomicString& type() const;
   void setSrc(const String&);
   void setType(const AtomicString&);
 
   void scheduleErrorEvent();
   void cancelPendingErrorEvent();
 
-  void dispatchPendingEvent(SourceEventSender*);
-
   bool mediaQueryMatches() const;
 
   void removeMediaQueryListListener();
   void addMediaQueryListListener();
 
   DECLARE_VIRTUAL_TRACE();
 
  private:
   explicit HTMLSourceElement(Document&);
 
+  void dispatchPendingEvent();
+
   void didMoveToNewDocument(Document& oldDocument) override;
 
   InsertionNotificationRequest insertedInto(ContainerNode*) override;
   void removedFrom(ContainerNode*) override;
   bool isURLAttribute(const Attribute&) const override;
   void parseAttribute(const QualifiedName&,
                       const AtomicString&,
                       const AtomicString&) override;
 
   void notifyMediaQueryChanged();
   void createMediaQueryList(const AtomicString& media);
 
   Member<MediaQueryList> m_mediaQueryList;
   Member<Listener> m_listener;
+  TaskHandle m_pendingErrorEvent;
 };
 
 }  // namespace blink
 
 #endif  // HTMLSourceElement_h