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

sky/engine/core/rendering/RenderGrid.cpp

Index: sky/engine/core/rendering/RenderGrid.cpp
diff --git a/sky/engine/core/rendering/RenderGrid.cpp b/sky/engine/core/rendering/RenderGrid.cpp
index caa8192976b0e774980a3859705617c305c8fe67..930b3d4d791f6ab4d6b2639715c836700fea4730 100644
--- a/sky/engine/core/rendering/RenderGrid.cpp
+++ b/sky/engine/core/rendering/RenderGrid.cpp
@@ -1296,26 +1296,8 @@ LayoutUnit RenderGrid::rowPositionForChild(const RenderBox* child) const
 
     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: