First past at removing writing mode.

sky/engine/core/css/CSSPrimitiveValueMappings.h

 /*
  * Copyright (C) 2007 Alexey Proskuryakov <ap@nypop.com>.
  * Copyright (C) 2008, 2009, 2010, 2011 Apple Inc. All rights reserved.
  * Copyright (C) 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  * Copyright (C) 2009 Jeff Schiller <codedread@gmail.com>
  * Copyright (C) Research In Motion Limited 2010. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
@@ skipping 2424 matching lines @@
     case CSSValueRtl:
         return RTL;
     default:
         break;
     }
 
     ASSERT_NOT_REACHED();
     return LTR;
 }
 
-template<> inline CSSPrimitiveValue::CSSPrimitiveValue(WritingMode e)
-    : CSSValue(PrimitiveClass)
-{
-    m_primitiveUnitType = CSS_VALUE_ID;
-    switch (e) {
-    case TopToBottomWritingMode:
-        m_value.valueID = CSSValueHorizontalTb;
-        break;
-    case RightToLeftWritingMode:
-        m_value.valueID = CSSValueVerticalRl;
-        break;
-    case LeftToRightWritingMode:
-        m_value.valueID = CSSValueVerticalLr;
-        break;
-    case BottomToTopWritingMode:
-        m_value.valueID = CSSValueHorizontalBt;
-        break;
-    }
-}
-
-template<> inline CSSPrimitiveValue::operator WritingMode() const
-{
-    ASSERT(isValueID());
-    switch (m_value.valueID) {
-    case CSSValueHorizontalTb:
-        return TopToBottomWritingMode;
-    case CSSValueVerticalRl:
-        return RightToLeftWritingMode;
-    case CSSValueVerticalLr:
-        return LeftToRightWritingMode;
-    case CSSValueHorizontalBt:
-        return BottomToTopWritingMode;
-    default:
-        break;
-    }
-
-    ASSERT_NOT_REACHED();
-    return TopToBottomWritingMode;
-}
-
 template<> inline CSSPrimitiveValue::CSSPrimitiveValue(TextCombine e)
     : CSSValue(PrimitiveClass)
 {
     m_primitiveUnitType = CSS_VALUE_ID;
     switch (e) {
     case TextCombineNone:
         m_value.valueID = CSSValueNone;
         break;
     case TextCombineHorizontal:
         m_value.valueID = CSSValueHorizontal;
@@ skipping 1365 matching lines @@
     default:
         break;
     }
     ASSERT_NOT_REACHED();
     return ScrollBehaviorInstant;
 }
 
 }
 
 #endif