Remove explicit bounds check from CSSValueList::item

Source/core/css/resolver/FontBuilder.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  * Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All rights reserved.
  * Copyright (C) 2013 Google 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.
  *
@@ skipping 385 matching lines @@
     FontDescriptionChangeScope scope(this);
 
     FontDescription::LigaturesState commonLigaturesState = FontDescription::NormalLigaturesState;
     FontDescription::LigaturesState discretionaryLigaturesState = FontDescription::NormalLigaturesState;
     FontDescription::LigaturesState historicalLigaturesState = FontDescription::NormalLigaturesState;
     FontDescription::LigaturesState contextualLigaturesState = FontDescription::NormalLigaturesState;
 
     if (value->isValueList()) {
         CSSValueList* valueList = toCSSValueList(value);
         for (size_t i = 0; i < valueList->length(); ++i) {
-            CSSValue* item = valueList->itemWithoutBoundsCheck(i);
+            CSSValue* item = valueList->item(i);
             ASSERT(item->isPrimitiveValue());
             if (item->isPrimitiveValue()) {
                 CSSPrimitiveValue* primitiveValue = toCSSPrimitiveValue(item);
                 switch (primitiveValue->getValueID()) {
                 case CSSValueNoCommonLigatures:
                     commonLigaturesState = FontDescription::DisabledLigaturesState;
                     break;
                 case CSSValueCommonLigatures:
                     commonLigaturesState = FontDescription::EnabledLigaturesState;
                     break;
@@ skipping 87 matching lines @@
 }
 
 void FontBuilder::setFeatureSettingsValue(CSSValue* value)
 {
     FontDescriptionChangeScope scope(this);
 
     CSSValueList* list = toCSSValueList(value);
     RefPtr<FontFeatureSettings> settings = FontFeatureSettings::create();
     int len = list->length();
     for (int i = 0; i < len; ++i) {
-        CSSValue* item = list->itemWithoutBoundsCheck(i);
+        CSSValue* item = list->item(i);
         if (!item->isFontFeatureValue())
             continue;
         CSSFontFeatureValue* feature = toCSSFontFeatureValue(item);
         settings->append(FontFeature(feature->tag(), feature->value()));
     }
     scope.fontDescription().setFeatureSettings(settings.release());
 }
 
 void FontBuilder::setSize(FontDescription& fontDescription, float effectiveZoom, float size)
 {
@@ skipping 135 matching lines @@
     FontOrientation fontOrientation;
     NonCJKGlyphOrientation glyphOrientation;
     getFontAndGlyphOrientation(documentStyle, fontOrientation, glyphOrientation);
     fontDescription.setOrientation(fontOrientation);
     fontDescription.setNonCJKGlyphOrientation(glyphOrientation);
     documentStyle->setFontDescription(fontDescription);
     documentStyle->font().update(fontSelector);
 }
 
 }