Remove the Vector::append overload that takes a Vector

Source/core/dom/StyleEngine.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2001 Dirk Mueller (mueller@kde.org)
  *           (C) 2006 Alexey Proskuryakov (ap@webkit.org)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2011, 2012 Apple Inc. All rights reserved.
  * Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  * Copyright (C) 2008, 2009, 2011, 2012 Google Inc. All rights reserved.
  * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies)
  * Copyright (C) Research In Motion Limited 2010-2011. All rights reserved.
@@ skipping 390 matching lines @@
     return requiresFullStyleRecalc;
 }
 
 const Vector<RefPtr<StyleSheet> > StyleEngine::activeStyleSheetsForInspector() const
 {
     if (m_activeTreeScopes.isEmpty())
         return m_documentStyleSheetCollection.styleSheetsForStyleSheetList();
 
     Vector<RefPtr<StyleSheet> > activeStyleSheets;
 
-    activeStyleSheets.append(m_documentStyleSheetCollection.styleSheetsForStyleSheetList());
+    activeStyleSheets.appendVector(m_documentStyleSheetCollection.styleSheetsForStyleSheetList());
 
     TreeScopeSet::const_iterator begin = m_activeTreeScopes.begin();
     TreeScopeSet::const_iterator end = m_activeTreeScopes.end();
     for (TreeScopeSet::const_iterator it = begin; it != end; ++it) {
         if (TreeScopeStyleSheetCollection* collection = m_styleSheetCollectionMap.get(*it))
-            activeStyleSheets.append(collection->styleSheetsForStyleSheetList());
+            activeStyleSheets.appendVector(collection->styleSheetsForStyleSheetList());
     }
 
     // FIXME: Inspector needs a vector which has all active stylesheets.
     // However, creating such a large vector might cause performance regression.
     // Need to implement some smarter solution.
     return activeStyleSheets;
 }
 
 void StyleEngine::didRemoveShadowRoot(ShadowRoot* shadowRoot)
 {
@@ skipping 182 matching lines @@
 {
     HashMap<StyleSheetContents*, AtomicString>::iterator it = sheetToTextCache().find(contents);
     if (it == sheetToTextCache().end())
         return;
 
     textToSheetCache().remove(it->value);
     sheetToTextCache().remove(contents);
 }
 
 }