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

third_party/WebKit/Source/core/css/StyleSheetContents.cpp

 /*
  * (C) 1999-2003 Lars Knoll (knoll@kde.org)
  * Copyright (C) 2004, 2006, 2007, 2012 Apple Inc. All rights reserved.
  *
  * 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.
  *
  * This library is distributed in the hope that it will be useful,
@@ skipping 145 matching lines @@
 }
 
 void StyleSheetContents::parserAppendRule(StyleRuleBase* rule) {
   if (rule->isImportRule()) {
     // Parser enforces that @import rules come before anything else
     ASSERT(m_childRules.isEmpty());
     StyleRuleImport* importRule = toStyleRuleImport(rule);
     if (importRule->mediaQueries())
       setHasMediaQueries();
     m_importRules.append(importRule);
-    m_importRules.last()->setParentStyleSheet(this);
-    m_importRules.last()->requestStyleSheet();
+    m_importRules.back()->setParentStyleSheet(this);
+    m_importRules.back()->requestStyleSheet();
     return;
   }
 
   if (rule->isNamespaceRule()) {
     // Parser enforces that @namespace rules come before all rules other than
     // import/charset rules
     ASSERT(m_childRules.isEmpty());
     StyleRuleNamespace& namespaceRule = toStyleRuleNamespace(*rule);
     parserAddNamespace(namespaceRule.prefix(), namespaceRule.uri());
     m_namespaceRules.append(&namespaceRule);
@@ skipping 507 matching lines @@
   visitor->trace(m_importRules);
   visitor->trace(m_namespaceRules);
   visitor->trace(m_childRules);
   visitor->trace(m_loadingClients);
   visitor->trace(m_completedClients);
   visitor->trace(m_ruleSet);
   visitor->trace(m_referencedFromResource);
 }
 
 }  // namespace blink