Add removeAll method to sets and maps and use them

Source/core/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 332 matching lines @@
         HashSet<SVGElement*>* referencingElements = it->value.get();
         HashSet<SVGElement*>::iterator setIt = referencingElements->find(referencingElement);
         if (setIt == referencingElements->end())
             continue;
 
         referencingElements->remove(setIt);
         if (referencingElements->isEmpty())
             toBeRemoved.append(referencedElement);
     }
 
-    Vector<SVGElement*>::iterator vectorEnd = toBeRemoved.end();
-    for (Vector<SVGElement*>::iterator it = toBeRemoved.begin(); it != vectorEnd; ++it)
-        m_elementDependencies.remove(*it);
+    m_elementDependencies.removeAll(toBeRemoved);
 }
 
 void SVGDocumentExtensions::rebuildAllElementReferencesForTarget(SVGElement* referencedElement)
 {
     ASSERT(referencedElement);
     HashMap<SVGElement*, OwnPtr<HashSet<SVGElement*> > >::iterator it = m_elementDependencies.find(referencedElement);
     if (it == m_elementDependencies.end())
         return;
     ASSERT(it->key == referencedElement);
     Vector<SVGElement*> toBeNotified;
@@ skipping 72 matching lines @@
 }
 
 void SVGDocumentExtensions::removePendingSVGFontFaceElementsForRemoval()
 {
     m_pendingSVGFontFaceElementsForRemoval.clear();
 }
 
 #endif
 
 }