Add error dispatch events to SVGStyleElement

Source/core/svg/SVGStyleElement.h

 /*
  * Copyright (C) 2004, 2005 Nikolas Zimmermann <zimmermann@kde.org>
  * Copyright (C) 2004, 2005, 2006, 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.
  */
 
 #ifndef SVGStyleElement_h
 #define SVGStyleElement_h
 
 #include "core/SVGNames.h"
 #include "core/dom/StyleElement.h"
+#include "core/events/EventSender.h"
 #include "core/svg/SVGElement.h"
 #include "platform/heap/Handle.h"
 
 namespace blink {
 
+typedef EventSender<SVGStyleElement> SVGStyleEventSender;
+
 class SVGStyleElement final : public SVGElement
                             , public StyleElement {
     DEFINE_WRAPPERTYPEINFO();
     WILL_BE_USING_GARBAGE_COLLECTED_MIXIN(SVGStyleElement);
 public:
     static PassRefPtrWillBeRawPtr<SVGStyleElement> create(Document&, bool createdByParser);
     virtual ~SVGStyleElement();
 
     using StyleElement::sheet;
 
     bool disabled() const;
     void setDisabled(bool);
 
     virtual const AtomicString& type() const override;
     void setType(const AtomicString&);
 
     virtual const AtomicString& media() const override;
     void setMedia(const AtomicString&);
 
     virtual String title() const override;
     void setTitle(const AtomicString&);
 
+    void dispatchPendingEvent(SVGStyleEventSender*);
+
     DECLARE_VIRTUAL_TRACE();
 
 private:
     SVGStyleElement(Document&, bool createdByParser);
 
     virtual void parseAttribute(const QualifiedName&, const AtomicString&) override;
     virtual InsertionNotificationRequest insertedInto(ContainerNode*) override;
     virtual void didNotifySubtreeInsertionsToDocument() override;
     virtual void removedFrom(ContainerNode*) override;
     virtual void childrenChanged(const ChildrenChange&) override;
 
     virtual void finishParsingChildren() override;
     virtual bool layoutObjectIsNeeded(const LayoutStyle&) override { return false; }
 
     virtual bool sheetLoaded() override { return StyleElement::sheetLoaded(document()); }
     virtual void startLoadingDynamicSheet() override { StyleElement::startLoadingDynamicSheet(document()); }
     virtual Timer<SVGElement>* svgLoadEventTimer() override { return &m_svgLoadEventTimer; }
+    void sendSVGErrorEventAsynchronously();
 
     Timer<SVGElement> m_svgLoadEventTimer;
 };
 
 } // namespace blink
 
 #endif // SVGStyleElement_h