Implement unicode bidi P2 and P3 rules in BidiResolver

Source/wtf/text/StringImpl.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2001 Dirk Mueller ( mueller@kde.org )
  * Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2013 Apple Inc. All rights reserved.
  * Copyright (C) 2006 Andrew Wellington (proton@wiretapped.net)
  *
  * 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
@@ skipping 1947 matching lines @@
 
 bool equalIgnoringNullity(StringImpl* a, StringImpl* b)
 {
     if (!a && b && !b->length())
         return true;
     if (!b && a && !a->length())
         return true;
     return equal(a, b);
 }
 
-WTF::Unicode::Direction StringImpl::defaultWritingDirection(bool* hasStrongDirectionality)
-{
-    for (unsigned i = 0; i < m_length; ++i) {
-        WTF::Unicode::Direction charDirection = WTF::Unicode::direction(is8Bit() ? characters8()[i] : characters16()[i]);
-        if (charDirection == WTF::Unicode::LeftToRight) {
-            if (hasStrongDirectionality)
-                *hasStrongDirectionality = true;
-            return WTF::Unicode::LeftToRight;
-        }
-        if (charDirection == WTF::Unicode::RightToLeft || charDirection == WTF::Unicode::RightToLeftArabic) {
-            if (hasStrongDirectionality)
-                *hasStrongDirectionality = true;
-            return WTF::Unicode::RightToLeft;
-        }
-    }
-    if (hasStrongDirectionality)
-        *hasStrongDirectionality = false;
-    return WTF::Unicode::LeftToRight;
-}
-
 size_t StringImpl::sizeInBytes() const
 {
     size_t size = length();
     if (!is8Bit())
         size *= 2;
     return size + sizeof(*this);
 }
 
 } // namespace WTF