First past at removing writing mode.

sky/engine/core/rendering/RenderBox.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2005 Allan Sandfeld Jensen (kde@carewolf.com)
  *           (C) 2005, 2006 Samuel Weinig (sam.weinig@gmail.com)
  * Copyright (C) 2005, 2006, 2007, 2008, 2009, 2010 Apple Inc. All rights reserved.
  * Copyright (C) 2013 Adobe Systems Incorporated. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
@@ skipping 3844 matching lines @@
 LayoutRect RenderBox::logicalVisualOverflowRectForPropagation(RenderStyle* parentStyle) const
 {
     LayoutRect rect = visualOverflowRectForPropagation(parentStyle);
     if (!parentStyle->isHorizontalWritingMode())
         return rect.transposedRect();
     return rect;
 }
 
 LayoutRect RenderBox::visualOverflowRectForPropagation(RenderStyle* parentStyle) const
 {
-    // If the writing modes of the child and parent match, then we don't have to
-    // do anything fancy. Just return the result.
-    LayoutRect rect = visualOverflowRect();
-    if (parentStyle->writingMode() == style()->writingMode())
-        return rect;
-
-    // We are putting ourselves into our parent's coordinate space.  If there is a flipped block mismatch
-    // in a particular axis, then we have to flip the rect along that axis.
-    if (style()->writingMode() == RightToLeftWritingMode || parentStyle->writingMode() == RightToLeftWritingMode)
-        rect.setX(width() - rect.maxX());
-    else if (style()->writingMode() == BottomToTopWritingMode || parentStyle->writingMode() == BottomToTopWritingMode)
-        rect.setY(height() - rect.maxY());
-
-    return rect;
+    // FIXME(sky): Remove
+    return visualOverflowRect();
 }
 
 LayoutRect RenderBox::logicalLayoutOverflowRectForPropagation(RenderStyle* parentStyle) const
 {
     LayoutRect rect = layoutOverflowRectForPropagation(parentStyle);
     if (!parentStyle->isHorizontalWritingMode())
         return rect.transposedRect();
     return rect;
 }
 
@@ skipping 19 matching lines @@
         if (hasTransform)
             rect = layer()->currentTransform().mapRect(rect);
 
         if (isRelPositioned())
             rect.move(offsetForInFlowPosition());
 
         // Now we need to flip back.
         flipForWritingMode(rect);
     }
 
-    // If the writing modes of the child and parent match, then we don't have to
-    // do anything fancy. Just return the result.
-    if (parentStyle->writingMode() == style()->writingMode())
-        return rect;
-
-    // We are putting ourselves into our parent's coordinate space.  If there is a flipped block mismatch
-    // in a particular axis, then we have to flip the rect along that axis.
-    if (style()->writingMode() == RightToLeftWritingMode || parentStyle->writingMode() == RightToLeftWritingMode)
-        rect.setX(width() - rect.maxX());
-    else if (style()->writingMode() == BottomToTopWritingMode || parentStyle->writingMode() == BottomToTopWritingMode)
-        rect.setY(height() - rect.maxY());
-
     return rect;
 }
 
 LayoutRect RenderBox::noOverflowRect() const
 {
     // Because of the special coordinate system used for overflow rectangles and many other
     // rectangles (not quite logical, not quite physical), we need to flip the block progression
     // coordinate in vertical-rl and horizontal-bt writing modes. In other words, the rectangle
     // returned is physical, except for the block direction progression coordinate (y in horizontal
     // writing modes, x in vertical writing modes), which is always "logical top". Apart from the
@@ skipping 216 matching lines @@
 
 RenderBox::BoxDecorationData::BoxDecorationData(const RenderStyle& style)
 {
     backgroundColor = style.colorIncludingFallback(CSSPropertyBackgroundColor);
     hasBackground = backgroundColor.alpha() || style.hasBackgroundImage();
     ASSERT(hasBackground == style.hasBackground());
     hasBorder = style.hasBorder();
 }
 
 } // namespace blink