Remove EventSender from HTMLSourceElement

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

 /*
  * 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 12 matching lines @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #include "core/html/HTMLSourceElement.h"
 
 #include "core/HTMLNames.h"
 #include "core/css/MediaList.h"
 #include "core/css/MediaQueryList.h"
 #include "core/css/MediaQueryMatcher.h"
 #include "core/dom/Document.h"
+#include "core/dom/TaskRunnerHelper.h"
 #include "core/events/Event.h"
-#include "core/events/EventSender.h"
 #include "core/html/HTMLMediaElement.h"
 #include "core/html/HTMLPictureElement.h"
 
 #define SOURCE_LOG_LEVEL 3
 
 namespace blink {
 
 using namespace HTMLNames;
 
-static SourceEventSender& sourceErrorEventSender() {
-  DEFINE_STATIC_LOCAL(SourceEventSender, sharedErrorEventSender,
-                      (SourceEventSender::create(EventTypeNames::error)));
-  return sharedErrorEventSender;
-}
-
 class HTMLSourceElement::Listener final : public MediaQueryListListener {
  public:
   explicit Listener(HTMLSourceElement* element) : m_element(element) {}
   void notifyMediaQueryChanged() override {
     if (m_element)
       m_element->notifyMediaQueryChanged();
   }
 
   void clearElement() { m_element = nullptr; }
   DEFINE_INLINE_VIRTUAL_TRACE() {
@@ skipping 73 matching lines @@
 const AtomicString& HTMLSourceElement::type() const {
   return getAttribute(typeAttr);
 }
 
 void HTMLSourceElement::setType(const AtomicString& type) {
   setAttribute(typeAttr, type);
 }
 
 void HTMLSourceElement::scheduleErrorEvent() {
   DVLOG(SOURCE_LOG_LEVEL) << "scheduleErrorEvent - " << (void*)this;
-  sourceErrorEventSender().dispatchEventSoon(this);
+
+  m_pendingErrorEvent =
+      TaskRunnerHelper::get(TaskType::DOMManipulation, &document())
+          ->postCancellableTask(
+              BLINK_FROM_HERE,
+              WTF::bind(&HTMLSourceElement::dispatchPendingEvent,
+                        wrapPersistent(this)));
 }
 
 void HTMLSourceElement::cancelPendingErrorEvent() {
   DVLOG(SOURCE_LOG_LEVEL) << "cancelPendingErrorEvent - " << (void*)this;
-  sourceErrorEventSender().cancelEvent(this);
+  m_pendingErrorEvent.cancel();
 }
 
-void HTMLSourceElement::dispatchPendingEvent(SourceEventSender* eventSender) {
-  DCHECK_EQ(eventSender, &sourceErrorEventSender());
+void HTMLSourceElement::dispatchPendingEvent() {
   DVLOG(SOURCE_LOG_LEVEL) << "dispatchPendingEvent - " << (void*)this;
   dispatchEvent(Event::createCancelable(EventTypeNames::error));
 }
 
 bool HTMLSourceElement::mediaQueryMatches() const {
   if (!m_mediaQueryList)
     return true;
 
   return m_mediaQueryList->matches();
 }
@@ skipping 22 matching lines @@
     toHTMLPictureElement(parent)->sourceOrMediaChanged();
 }
 
 DEFINE_TRACE(HTMLSourceElement) {
   visitor->trace(m_mediaQueryList);
   visitor->trace(m_listener);
   HTMLElement::trace(visitor);
 }
 
 }  // namespace blink