First pass at removing dead vertical writing mode code.

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 28 matching lines @@
 #include "core/rendering/style/RenderStyleConstants.h"
 #include "platform/Length.h"
 #include "platform/fonts/FontDescription.h"
 #include "platform/fonts/FontSmoothingMode.h"
 #include "platform/fonts/TextRenderingMode.h"
 #include "platform/graphics/GraphicsTypes.h"
 #include "platform/graphics/Path.h"
 #include "platform/scroll/ScrollableArea.h"
 #include "platform/text/TextDirection.h"
 #include "platform/text/UnicodeBidi.h"
-#include "platform/text/WritingMode.h"
 #include "wtf/MathExtras.h"
 
 namespace blink {
 
 template<> inline CSSPrimitiveValue::CSSPrimitiveValue(short i)
     : CSSValue(PrimitiveClass)
 {
     m_primitiveUnitType = CSS_NUMBER;
     m_value.num = static_cast<double>(i);
 }
@@ skipping 3760 matching lines @@
     default:
         break;
     }
     ASSERT_NOT_REACHED();
     return ScrollBehaviorInstant;
 }
 
 }
 
 #endif