Revert of Remove EventSender from HTMLStyleElement

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

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2001 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2003, 2010 Apple Inc. All rights reserved.
  *           (C) 2007 Rob Buis (buis@kde.org)
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
  *
  * This library is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * Library General Public License for more details.
  *
  * You should have received a copy of the GNU Library General Public License
  * along with this library; see the file COPYING.LIB.  If not, write to
  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  * Boston, MA 02110-1301, USA.
  */
 
 #include "core/html/HTMLStyleElement.h"
 
 #include "core/HTMLNames.h"
 #include "core/css/MediaList.h"
 #include "core/dom/Document.h"
 #include "core/dom/StyleEngine.h"
-#include "core/dom/TaskRunnerHelper.h"
 #include "core/dom/shadow/ShadowRoot.h"
 #include "core/events/Event.h"
+#include "core/events/EventSender.h"
 
 namespace blink {
 
 using namespace HTMLNames;
 
+static StyleEventSender& styleLoadEventSender() {
+  DEFINE_STATIC_LOCAL(StyleEventSender, sharedLoadEventSender,
+                      (StyleEventSender::create(EventTypeNames::load)));
+  return sharedLoadEventSender;
+}
+
 inline HTMLStyleElement::HTMLStyleElement(Document& document,
                                           bool createdByParser)
     : HTMLElement(styleTag, document),
       StyleElement(&document, createdByParser),
       m_firedLoad(false),
       m_loadedSheet(false) {}
 
 HTMLStyleElement::~HTMLStyleElement() {}
 
 HTMLStyleElement* HTMLStyleElement::create(Document& document,
@@ skipping 52 matching lines @@
 }
 
 const AtomicString& HTMLStyleElement::media() const {
   return getAttribute(mediaAttr);
 }
 
 const AtomicString& HTMLStyleElement::type() const {
   return getAttribute(typeAttr);
 }
 
-void HTMLStyleElement::dispatchPendingEvent(
-    std::unique_ptr<IncrementLoadEventDelayCount>) {
+void HTMLStyleElement::dispatchPendingLoadEvents() {
+  styleLoadEventSender().dispatchPendingEvents();
+}
+
+void HTMLStyleElement::dispatchPendingEvent(StyleEventSender* eventSender) {
+  DCHECK_EQ(eventSender, &styleLoadEventSender());
   dispatchEvent(Event::create(m_loadedSheet ? EventTypeNames::load
                                             : EventTypeNames::error));
 }
 
 void HTMLStyleElement::notifyLoadedSheetAndAllCriticalSubresources(
     LoadedSheetErrorStatus errorStatus) {
   bool isLoadEvent = errorStatus == NoErrorLoadingSubresource;
   if (m_firedLoad && isLoadEvent)
     return;
   m_loadedSheet = isLoadEvent;
-  TaskRunnerHelper::get(TaskType::DOMManipulation, &document())
-      ->postTask(
-          BLINK_FROM_HERE,
-          WTF::bind(&HTMLStyleElement::dispatchPendingEvent,
-                    wrapPersistent(this),
-                    passed(IncrementLoadEventDelayCount::create(document()))));
+  styleLoadEventSender().dispatchEventSoon(this);
   m_firedLoad = true;
 }
 
 bool HTMLStyleElement::disabled() const {
   if (!m_sheet)
     return false;
 
   return m_sheet->disabled();
 }
 
 void HTMLStyleElement::setDisabled(bool setDisabled) {
   if (CSSStyleSheet* styleSheet = sheet())
     styleSheet->setDisabled(setDisabled);
 }
 
 DEFINE_TRACE(HTMLStyleElement) {
   StyleElement::trace(visitor);
   HTMLElement::trace(visitor);
 }
 
 }  // namespace blink