Remove Backslash-as-JPY hack

Source/wtf/text/TextEncoding.h

 /*
  * Copyright (C) 2004, 2006, 2007, 2008, 2009 Apple Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 24 matching lines @@
 
 class WTF_EXPORT TextEncoding {
 public:
     TextEncoding() : m_name(0) { }
     TextEncoding(const char* name);
     TextEncoding(const String& name);
 
     bool isValid() const { return m_name; }
     const char* name() const { return m_name; }
     bool usesVisualOrdering() const;
-
-    bool hasTrivialDisplayString() const { return m_backslashAsCurrencySymbol == '\\'; }
-
-    PassRefPtr<StringImpl> displayString(PassRefPtr<StringImpl> str) const
-    {
-        if (hasTrivialDisplayString() || !str)
-            return str;
-        return str->replace('\\', m_backslashAsCurrencySymbol);
-    }
-    template <typename CharacterType>
-    void displayBuffer(CharacterType* characters, unsigned len) const
-    {
-        if (hasTrivialDisplayString())
-            return;
-        for (unsigned i = 0; i < len; ++i) {
-            if (characters[i] == '\\')
-                characters[i] = m_backslashAsCurrencySymbol;
-        }
-    }
-
     const TextEncoding& closestByteBasedEquivalent() const;
     const TextEncoding& encodingForFormSubmission() const;
 
     String decode(const char* str, size_t length) const
     {
         bool ignored;
         return decode(str, length, false, ignored);
     }
     String decode(const char*, size_t length, bool stopOnError, bool& sawError) const;
 
@@ skipping 30 matching lines @@
 using WTF::ASCIIEncoding;
 using WTF::Latin1Encoding;
 using WTF::UTF16BigEndianEncoding;
 using WTF::UTF16LittleEndianEncoding;
 using WTF::UTF32BigEndianEncoding;
 using WTF::UTF32LittleEndianEncoding;
 using WTF::UTF8Encoding;
 using WTF::WindowsLatin1Encoding;
 
 #endif // TextEncoding_h