First pass at removing dead vertical writing mode code.

sky/engine/platform/LengthBox.cpp

 /*
  * Copyright (c) 2012, Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 17 matching lines @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #include "config.h"
 #include "platform/LengthBox.h"
 
 namespace blink {
 
 const Length& LengthBox::logicalLeft() const
 {
-    return isHorizontalWritingMode() ? m_left : m_top;
+    return m_left;
 }
 
 const Length& LengthBox::logicalRight() const
 {
-    return isHorizontalWritingMode() ? m_right : m_bottom;
+    return m_right;
 }
 
 const Length& LengthBox::before() const
 {
     // FIXME(sky): Remove
     return m_top;
 }
 
 const Length& LengthBox::after() const
 {
     // FIXME(sky): Remove
     return m_bottom;
 }
 
 const Length& LengthBox::start(TextDirection direction) const
 {
-    if (isHorizontalWritingMode())
-        return isLeftToRightDirection(direction) ? m_left : m_right;
-    return isLeftToRightDirection(direction) ? m_top : m_bottom;
+    return isLeftToRightDirection(direction) ? m_left : m_right;
 }
 
 const Length& LengthBox::end(TextDirection direction) const
 {
-    if (isHorizontalWritingMode())
-        return isLeftToRightDirection(direction) ? m_right : m_left;
-    return isLeftToRightDirection(direction) ? m_bottom : m_top;
+    return isLeftToRightDirection(direction) ? m_right : m_left;
 }
 
 } // namespace blink