Remove the "horizontal-bt" value from -webkit-writing-mode

third_party/WebKit/Source/core/layout/shapes/ShapeOutsideInfo.cpp

 /*
  * Copyright (C) 2012 Adobe Systems Incorporated. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  * 1. Redistributions of source code must retain the above
  *    copyright notice, this list of conditions and the following
  *    disclaimer.
@@ skipping 168 matching lines @@
     }
 
     ASSERT(m_shape);
     return *m_shape;
 }
 
 inline LayoutUnit borderBeforeInWritingMode(const LayoutBox& layoutBox, WritingMode writingMode)
 {
     switch (writingMode) {
     case TopToBottomWritingMode: return layoutBox.borderTop();
-    case BottomToTopWritingMode: return layoutBox.borderBottom();
     case LeftToRightWritingMode: return layoutBox.borderLeft();
     case RightToLeftWritingMode: return layoutBox.borderRight();
     }
 
     ASSERT_NOT_REACHED();
     return layoutBox.borderBefore();
 }
 
 inline LayoutUnit borderAndPaddingBeforeInWritingMode(const LayoutBox& layoutBox, WritingMode writingMode)
 {
     switch (writingMode) {
     case TopToBottomWritingMode: return layoutBox.borderTop() + layoutBox.paddingTop();
-    case BottomToTopWritingMode: return layoutBox.borderBottom() + layoutBox.paddingBottom();
     case LeftToRightWritingMode: return layoutBox.borderLeft() + layoutBox.paddingLeft();
     case RightToLeftWritingMode: return layoutBox.borderRight() + layoutBox.paddingRight();
     }
 
     ASSERT_NOT_REACHED();
     return layoutBox.borderAndPaddingBefore();
 }
 
 LayoutUnit ShapeOutsideInfo::logicalTopOffset() const
 {
@@ skipping 135 matching lines @@
 }
 
 FloatSize ShapeOutsideInfo::shapeToLayoutObjectSize(FloatSize size) const
 {
     if (!m_layoutBox.style()->isHorizontalWritingMode())
         return size.transposedSize();
     return size;
 }
 
 } // namespace blink