Make stylesheet owner node a reference instead of pointer.

third_party/WebKit/Source/core/svg/SVGStyleElement.cpp

 /*
  * Copyright (C) 2004, 2005 Nikolas Zimmermann <zimmermann@kde.org>
  * Copyright (C) 2004, 2005, 2006, 2007 Rob Buis <buis@kde.org>
  * Copyright (C) 2006 Apple Inc. All rights reserved.
  * Copyright (C) 2009 Cameron McCormack <cam@mcc.id.au>
  *
  * 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.
@@ skipping 93 matching lines @@
             m_sheet->setTitle(value);
 
         return;
     }
 
     SVGElement::parseAttribute(name, oldValue, value);
 }
 
 void SVGStyleElement::finishParsingChildren()
 {
-    StyleElement::ProcessingResult result = StyleElement::finishParsingChildren(this);
+    StyleElement::ProcessingResult result = StyleElement::finishParsingChildren(*this);
     SVGElement::finishParsingChildren();
     if (result == StyleElement::ProcessingFatalError)
         notifyLoadedSheetAndAllCriticalSubresources(ErrorOccurredLoadingSubresource);
 }
 
 Node::InsertionNotificationRequest SVGStyleElement::insertedInto(ContainerNode* insertionPoint)
 {
     SVGElement::insertedInto(insertionPoint);
-    StyleElement::insertedInto(this, insertionPoint);
+    StyleElement::insertedInto(*this, insertionPoint);
     return InsertionShouldCallDidNotifySubtreeInsertions;
 }
 
 void SVGStyleElement::didNotifySubtreeInsertionsToDocument()
 {
-    if (StyleElement::processStyleSheet(document(), this) == StyleElement::ProcessingFatalError)
+    if (StyleElement::processStyleSheet(document(), *this) == StyleElement::ProcessingFatalError)
         notifyLoadedSheetAndAllCriticalSubresources(ErrorOccurredLoadingSubresource);
 }
 
 void SVGStyleElement::removedFrom(ContainerNode* insertionPoint)
 {
     SVGElement::removedFrom(insertionPoint);
-    StyleElement::removedFrom(this, insertionPoint);
+    StyleElement::removedFrom(*this, insertionPoint);
 }
 
 void SVGStyleElement::childrenChanged(const ChildrenChange& change)
 {
     SVGElement::childrenChanged(change);
-    if (StyleElement::childrenChanged(this) == StyleElement::ProcessingFatalError)
+    if (StyleElement::childrenChanged(*this) == StyleElement::ProcessingFatalError)
         notifyLoadedSheetAndAllCriticalSubresources(ErrorOccurredLoadingSubresource);
 }
 
 void SVGStyleElement::notifyLoadedSheetAndAllCriticalSubresources(LoadedSheetErrorStatus errorStatus)
 {
     if (errorStatus != NoErrorLoadingSubresource)
         styleErrorEventSender().dispatchEventSoon(this);
 }
 
 void SVGStyleElement::dispatchPendingEvent(SVGStyleEventSender* eventSender)
 {
     ASSERT_UNUSED(eventSender, eventSender == &styleErrorEventSender());
     dispatchEvent(Event::create(EventTypeNames::error));
 }
 
 DEFINE_TRACE(SVGStyleElement)
 {
     StyleElement::trace(visitor);
     SVGElement::trace(visitor);
 }
 
 } // namespace blink