Remove the Vector::append overload that takes a Vector

Source/core/css/RuleFeature.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 2004-2005 Allan Sandfeld Jensen (kde@carewolf.com)
  * Copyright (C) 2006, 2007 Nicholas Shanks (webkit@nickshanks.com)
  * Copyright (C) 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012 Apple Inc. All rights reserved.
  * Copyright (C) 2007 Alexey Proskuryakov <ap@webkit.org>
  * Copyright (C) 2007, 2008 Eric Seidel <eric@webkit.org>
  * Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  * Copyright (c) 2011, Code Aurora Forum. All rights reserved.
  * Copyright (C) Research In Motion Limited 2011. All rights reserved.
@@ skipping 230 matching lines @@
 }
 
 void RuleFeatureSet::add(const RuleFeatureSet& other)
 {
     for (InvalidationSetMap::const_iterator it = other.m_classInvalidationSets.begin(); it != other.m_classInvalidationSets.end(); ++it) {
         ensureClassInvalidationSet(it->key).combine(*it->value);
     }
 
     m_metadata.add(other.m_metadata);
 
-    siblingRules.append(other.siblingRules);
-    uncommonAttributeRules.append(other.uncommonAttributeRules);
+    siblingRules.appendVector(other.siblingRules);
+    uncommonAttributeRules.appendVector(other.uncommonAttributeRules);
 }
 
 void RuleFeatureSet::clear()
 {
     m_metadata.clear();
     siblingRules.clear();
     uncommonAttributeRules.clear();
 }
 
 void RuleFeatureSet::scheduleStyleInvalidationForClassChange(const SpaceSplitString& changedClasses, Element* element)
@@ skipping 161 matching lines @@
         element->setNeedsStyleRecalc(LocalStyleChange);
 
     invalidationClasses.remove(oldSize, invalidationClasses.size() - oldSize);
     element->clearChildNeedsStyleInvalidation();
     element->clearNeedsStyleInvalidation();
 
     return thisElementNeedsStyleRecalc;
 }
 
 } // namespace WebCore