WTF/std normalization: replace WTF::Vector::last with ::back

third_party/WebKit/Source/core/css/resolver/MatchResult.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, 2013 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/)
@@ skipping 30 matching lines @@
 
 DEFINE_TRACE(MatchedProperties) {
   visitor->trace(properties);
 }
 
 void MatchResult::addMatchedProperties(
     const StylePropertySet* properties,
     unsigned linkMatchType,
     PropertyWhitelistType propertyWhitelistType) {
   m_matchedProperties.grow(m_matchedProperties.size() + 1);
-  MatchedProperties& newProperties = m_matchedProperties.last();
+  MatchedProperties& newProperties = m_matchedProperties.back();
   newProperties.properties = const_cast<StylePropertySet*>(properties);
   newProperties.m_types.linkMatchType = linkMatchType;
   newProperties.m_types.whitelistType = propertyWhitelistType;
 }
 
 void MatchResult::finishAddingUARules() {
   m_uaRangeEnd = m_matchedProperties.size();
 }
 
 void MatchResult::finishAddingAuthorRulesForTreeScope() {
   // Don't add empty ranges.
   if (m_authorRangeEnds.isEmpty() && m_uaRangeEnd == m_matchedProperties.size())
     return;
   if (!m_authorRangeEnds.isEmpty() &&
-      m_authorRangeEnds.last() == m_matchedProperties.size())
+      m_authorRangeEnds.back() == m_matchedProperties.size())
     return;
   m_authorRangeEnds.append(m_matchedProperties.size());
 }
 
 }  // namespace blink