Match 'i' attribute selector modifier case-insensitively

third_party/WebKit/Source/core/css/parser/CSSSelectorParser.cpp

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "core/css/parser/CSSSelectorParser.h"
 
 #include "core/css/CSSSelectorList.h"
 #include "core/css/StyleSheetContents.h"
 #include "core/frame/UseCounter.h"
 #include "platform/RuntimeEnabledFeatures.h"
@@ skipping 590 matching lines @@
         m_failedParsing = true;
         return CSSSelector::AttributeExact;
     }
 }
 
 CSSSelector::AttributeMatchType CSSSelectorParser::consumeAttributeFlags(CSSParserTokenRange& range)
 {
     if (range.peek().type() != IdentToken)
         return CSSSelector::CaseSensitive;
     const CSSParserToken& flag = range.consumeIncludingWhitespace();
-    if (String(flag.value()) == "i")
+    if (flag.valueEqualsIgnoringCase("i"))
         return CSSSelector::CaseInsensitive;
     m_failedParsing = true;
     return CSSSelector::CaseSensitive;
 }
 
 bool CSSSelectorParser::consumeANPlusB(CSSParserTokenRange& range, std::pair<int, int>& result)
 {
     const CSSParserToken& token = range.consume();
     if (token.type() == NumberToken && token.numericValueType() == IntegerValueType) {
         result = std::make_pair(0, static_cast<int>(token.numericValue()));
@@ skipping 141 matching lines @@
 
     if (!splitAfter || !splitAfter->tagHistory())
         return compoundSelector;
 
     OwnPtr<CSSParserSelector> secondCompound = splitAfter->releaseTagHistory();
     secondCompound->appendTagHistory(secondCompound->pseudoType() == CSSSelector::PseudoSlotted ? CSSSelector::ShadowSlot : CSSSelector::ShadowPseudo, compoundSelector);
     return secondCompound.release();
 }
 
 } // namespace blink