Use ASCII case-insensitive matching for ident-likes in the CSS parser

third_party/WebKit/Source/core/css/parser/CSSParserString.h

 /*
  * Copyright (C) 2003 Lars Knoll (knoll@kde.org)
  * Copyright (C) 2004, 2005, 2006, 2008, 2009, 2010 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 63 matching lines @@
     unsigned length() const { return m_length; }
 
     UChar operator[](unsigned i) const
     {
         ASSERT_WITH_SECURITY_IMPLICATION(i < m_length);
         if (is8Bit())
             return m_data.characters8[i];
         return m_data.characters16[i];
     }
 
-    bool equalIgnoringCase(const char* str) const
+    template<unsigned matchLength>
+    bool equalIgnoringASCIICase(const char (&match)[matchLength]) const
     {
-        bool match = is8Bit() ? WTF::equalIgnoringCase(str, characters8(), length()) : WTF::equalIgnoringCase(str, characters16(), length());
-        if (!match)
+        if (matchLength - 1 != length())
             return false;
-        ASSERT(strlen(str) >= length());
-        return str[length()] == '\0';
+        return is8Bit() ? WTF::equalIgnoringASCIICase(characters8(), match, length()) : WTF::equalIgnoringASCIICase(characters16(), match, length());
     }
 
     operator String() const { return is8Bit() ? String(m_data.characters8, m_length) : StringImpl::create8BitIfPossible(m_data.characters16, m_length); }
     operator AtomicString() const { return is8Bit() ? AtomicString(m_data.characters8, m_length) : AtomicString(m_data.characters16, m_length); }
 
     union {
         const LChar* characters8;
         const UChar* characters16;
         const void* charactersRaw;
     } m_data;
     unsigned m_length;
     bool m_is8Bit;
 };
 
 }
 
 #endif