Implement unicode bidi P2 and P3 rules in BidiResolver

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 405 matching lines @@
     static String fromUTF8(const LChar*, size_t);
     static String fromUTF8(const LChar*);
     static String fromUTF8(const char* s, size_t length) { return fromUTF8(reinterpret_cast<const LChar*>(s), length); };
     static String fromUTF8(const char* s) { return fromUTF8(reinterpret_cast<const LChar*>(s)); };
     static String fromUTF8(const CString&);
 
     // Tries to convert the passed in string to UTF-8, but will fall back to Latin-1 if the string is not valid UTF-8.
     static String fromUTF8WithLatin1Fallback(const LChar*, size_t);
     static String fromUTF8WithLatin1Fallback(const char* s, size_t length) { return fromUTF8WithLatin1Fallback(reinterpret_cast<const LChar*>(s), length); };
 
-    // Determines the writing direction using the Unicode Bidi Algorithm rules P2 and P3.
-    WTF::Unicode::Direction defaultWritingDirection(bool* hasStrongDirectionality = 0) const
-    {
-        if (m_impl)
-            return m_impl->defaultWritingDirection(hasStrongDirectionality);
-        if (hasStrongDirectionality)
-            *hasStrongDirectionality = false;
-        return WTF::Unicode::LeftToRight;
-    }
-
     bool containsOnlyASCII() const;
     bool containsOnlyLatin1() const;
     bool containsOnlyWhitespace() const { return !m_impl || m_impl->containsOnlyWhitespace(); }
 
     // Hash table deleted values, which are only constructed and never copied or destroyed.
     String(WTF::HashTableDeletedValueType) : m_impl(WTF::HashTableDeletedValue) { }
     bool isHashTableDeletedValue() const { return m_impl.isHashTableDeletedValue(); }
 
 #ifndef NDEBUG
     void show() const;
@@ skipping 262 matching lines @@
 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