Remove all writing mode function arguments and remove writing mode from RenderStyle.

sky/engine/platform/LengthBox.h

 /*
     Copyright (C) 1999 Lars Knoll (knoll@kde.org)
     Copyright (C) 2006, 2008 Apple Inc. All rights reserved.
     Copyright (c) 2012, Google 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.
 
@@ skipping 54 matching lines @@
         , m_top(Length(t, Fixed))
         , m_bottom(Length(b, Fixed))
     {
     }
 
     const Length& left() const { return m_left; }
     const Length& right() const { return m_right; }
     const Length& top() const { return m_top; }
     const Length& bottom() const { return m_bottom; }
 
-    const Length& logicalLeft(WritingMode) const;
-    const Length& logicalRight(WritingMode) const;
+    const Length& logicalLeft() const;
+    const Length& logicalRight() const;
 
-    const Length& before(WritingMode) const;
-    const Length& after(WritingMode) const;
-    const Length& start(WritingMode, TextDirection) const;
-    const Length& end(WritingMode, TextDirection) const;
+    const Length& before() const;
+    const Length& after() const;
+    const Length& start(TextDirection) const;
+    const Length& end(TextDirection) const;
 
     bool operator==(const LengthBox& o) const
     {
         return m_left == o.m_left && m_right == o.m_right && m_top == o.m_top && m_bottom == o.m_bottom;
     }
 
     bool operator!=(const LengthBox& o) const
     {
         return !(*this == o);
     }
 
     bool nonZero() const
     {
         return !(m_left.isZero() && m_right.isZero() && m_top.isZero() && m_bottom.isZero());
     }
 
     // Must be public for SET_VAR in RenderStyle.h
     Length m_left;
     Length m_right;
     Length m_top;
     Length m_bottom;
 };
 
 } // namespace blink
 
 #endif // LengthBox_h