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

sky/engine/core/rendering/RenderGrid.cpp

 /*
  * Copyright (C) 2011 Apple 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:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 1278 matching lines @@
     return align;
 }
 
 LayoutUnit RenderGrid::rowPositionForChild(const RenderBox* child) const
 {
     bool hasOrthogonalWritingMode = child->isHorizontalWritingMode() != isHorizontalWritingMode();
     ItemPosition alignSelf = resolveAlignment(style(), child->style());
 
     switch (alignSelf) {
     case ItemPositionSelfStart:
-        // If orthogonal writing-modes, this computes to 'Start'.
-        // FIXME: grid track sizing and positioning does not support orthogonal modes yet.
-        if (hasOrthogonalWritingMode)
-            return startOfRowForChild(child);
-
-        // self-start is based on the child's block axis direction. That's why we need to check against the grid container's block flow.
-        if (child->style()->writingMode() != style()->writingMode())
-            return endOfRowForChild(child);
-
         return startOfRowForChild(child);
     case ItemPositionSelfEnd:
-        // If orthogonal writing-modes, this computes to 'End'.
-        // FIXME: grid track sizing and positioning does not support orthogonal modes yet.
-        if (hasOrthogonalWritingMode)
-            return endOfRowForChild(child);
-
-        // self-end is based on the child's block axis direction. That's why we need to check against the grid container's block flow.
-        if (child->style()->writingMode() != style()->writingMode())
-            return startOfRowForChild(child);
-
         return endOfRowForChild(child);
 
     case ItemPositionLeft:
         // orthogonal modes make property and inline axes to be parallel, but in any case
         // this is always equivalent to 'Start'.
         //
         // self-align's axis is never parallel to the inline axis, except in orthogonal
         // writing-mode, so this is equivalent to 'Start’.
         return startOfRowForChild(child);
 
@@ skipping 113 matching lines @@
     if (isOutOfFlowPositioned())
         return "RenderGrid (positioned)";
     if (isAnonymous())
         return "RenderGrid (generated)";
     if (isRelPositioned())
         return "RenderGrid (relative positioned)";
     return "RenderGrid";
 }
 
 } // namespace blink