Merge 77548

Source/WebCore/svg/SVGDocumentExtensions.cpp

 /*
  * Copyright (C) 2006 Apple Inc. All rights reserved.
  * Copyright (C) 2006 Nikolas Zimmermann <zimmermann@kde.org>
  * Copyright (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.
  *
@@ skipping 75 matching lines @@
         return 0;
 
     return m_resources.get(id);
 }
 
 void SVGDocumentExtensions::startAnimations()
 {
     // FIXME: Eventually every "Time Container" will need a way to latch on to some global timer
     // starting animations for a document will do this "latching"
 #if ENABLE(SVG_ANIMATION)    
-    HashSet<SVGSVGElement*>::iterator end = m_timeContainers.end();
-    for (HashSet<SVGSVGElement*>::iterator itr = m_timeContainers.begin(); itr != end; ++itr)
+    // FIXME: We hold a ref pointers to prevent a shadow tree from getting removed out from underneath us.
+    // In the future we should refactor the use-element to avoid this. See https://webkit.org/b/53704
+    Vector<RefPtr<SVGSVGElement> > timeContainers;
+    timeContainers.appendRange(m_timeContainers.begin(), m_timeContainers.end());
+    Vector<RefPtr<SVGSVGElement> >::iterator end = timeContainers.end();
+    for (Vector<RefPtr<SVGSVGElement> >::iterator itr = timeContainers.begin(); itr != end; ++itr)
         (*itr)->timeContainer()->begin();
 #endif
 }
     
 void SVGDocumentExtensions::pauseAnimations()
 {
     HashSet<SVGSVGElement*>::iterator end = m_timeContainers.end();
     for (HashSet<SVGSVGElement*>::iterator itr = m_timeContainers.begin(); itr != end; ++itr)
         (*itr)->pauseAnimations();
 }
@@ skipping 78 matching lines @@
     ASSERT(m_pendingResources.contains(id));
 
     OwnPtr<SVGPendingElements> set(m_pendingResources.get(id));
     m_pendingResources.remove(id);
     return set.release();
 }
 
 }
 
 #endif