Add ascii() / latin1() / utf8() methods to AtomicString to avoid having to call string()

Source/wtf/text/WTFString.h

 /*
  * (C) 1999 Lars Knoll (knoll@kde.org)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2012, 2013 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 61 matching lines @@
 WTF_EXPORT float charactersToFloat(const LChar*, size_t, bool* ok = 0);
 WTF_EXPORT float charactersToFloat(const UChar*, size_t, bool* ok = 0);
 WTF_EXPORT float charactersToFloat(const LChar*, size_t, size_t& parsedLength);
 WTF_EXPORT float charactersToFloat(const UChar*, size_t, size_t& parsedLength);
 
 enum TrailingZerosTruncatingPolicy {
     KeepTrailingZeros,
     TruncateTrailingZeros
 };
 
+enum UTF8ConversionMode {
+    LenientUTF8Conversion,
+    StrictUTF8Conversion,
+    StrictUTF8ConversionReplacingUnpairedSurrogatesWithFFFD
+};
+
 template<bool isSpecialCharacter(UChar), typename CharacterType>
 bool isAllSpecialCharacters(const CharacterType*, size_t);
 
 // You can find documentation about this class in this doc:
 // https://docs.google.com/document/d/1kOCUlJdh2WJMJGDf-WoEQhmnjKLaOYRbiHz5TiGJl14/edit?usp=sharing
 class WTF_EXPORT String {
 public:
     // Construct a null string, distinguishable from an empty string.
     String() { }
 
@@ skipping 84 matching lines @@
 
     unsigned sizeInBytes() const
     {
         if (!m_impl)
             return 0;
         return m_impl->length() * (is8Bit() ? sizeof(LChar) : sizeof(UChar));
     }
 
     CString ascii() const;
     CString latin1() const;
-
-    typedef enum {
-        LenientConversion,
-        StrictConversion,
-        StrictConversionReplacingUnpairedSurrogatesWithFFFD,
-    } ConversionMode;
-
-    CString utf8(ConversionMode = LenientConversion) const;
+    CString utf8(UTF8ConversionMode = LenientUTF8Conversion) const;
 
     UChar operator[](unsigned index) const
     {
         if (!m_impl || index >= m_impl->length())
             return 0;
         return (*m_impl)[index];
     }
 
     static String number(int);
     static String number(unsigned);
@@ skipping 469 matching lines @@
     static const bool canCompareWithMemcmp = false;
 };
 
 // Shared global empty string.
 WTF_EXPORT const String& emptyString();
 
 }
 
 using WTF::CString;
 using WTF::KeepTrailingZeros;
+using WTF::StrictUTF8Conversion;
+using WTF::StrictUTF8ConversionReplacingUnpairedSurrogatesWithFFFD;
 using WTF::String;
 using WTF::emptyString;
 using WTF::append;
 using WTF::appendNumber;
 using WTF::charactersAreAllASCII;
 using WTF::charactersToIntStrict;
 using WTF::charactersToUIntStrict;
 using WTF::charactersToInt64Strict;
 using WTF::charactersToUInt64Strict;
 using WTF::charactersToIntPtrStrict;
 using WTF::charactersToInt;
 using WTF::charactersToUInt;
 using WTF::charactersToInt64;
 using WTF::charactersToUInt64;
 using WTF::charactersToIntPtr;
 using WTF::charactersToDouble;
 using WTF::charactersToFloat;
 using WTF::equal;
 using WTF::equalIgnoringCase;
 using WTF::find;
 using WTF::isAllSpecialCharacters;
 using WTF::isSpaceOrNewline;
 using WTF::reverseFind;
 
 #include "wtf/text/AtomicString.h"
 #endif