Use the baseline information exposed by C++ to pipe baseline data through RenderBox.

sky/engine/core/dom/Element.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2001 Peter Kelly (pmk@post.com)
  *           (C) 2001 Dirk Mueller (mueller@kde.org)
  *           (C) 2007 David Smith (catfish.man@gmail.com)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2012, 2013 Apple Inc. All rights reserved.
  *           (C) 2007 Eric Seidel (eric@webkit.org)
  *
  * This library is free software; you can redistribute it and/or
@@ skipping 957 matching lines @@
 
 void Element::setMaxContentWidth(double width)
 {
     if (RenderBox* box = renderBox())
         return box->setMaxPreferredLogicalWidth(width);
 }
 
 double Element::alphabeticBaseline() const
 {
     if (RenderBox* box = renderBox())
-        return box->baselinePosition(AlphabeticBaseline, true, HorizontalLine, PositionOfInteriorLineBoxes);
+        return box->firstLineBoxBaseline(false, AlphabeticBaseline);

[eseidel, 2015/06/24 23:20:35]

Please use an enum instead of a bool in non-setter callsites.

e.g. here:

firstLineBoxBaseline(NonAutoBaseline, ...)

Except with a name which actually describes what you're doing.

     return 0;
 }
 
 double Element::ideographicBaseline() const
 {
     if (RenderBox* box = renderBox())
-        return box->baselinePosition(IdeographicBaseline, true, HorizontalLine, PositionOfInteriorLineBoxes);
+        return box->firstLineBoxBaseline(false, IdeographicBaseline);
     return 0;
 }
 
 void Element::setNeedsLayout()
 {
     if (RenderBox* box = renderBox())
         box->setNeedsLayout();
 }
 
 void Element::layout()
@@ skipping 712 matching lines @@
     GraphicsContext context(canvas->skCanvas());
 
     // Very simplified painting to allow painting an arbitrary (layer-less) subtree.
     Vector<RenderBox*> layers;
     PaintInfo paintInfo(&context, box->absoluteBoundingBoxRect(), box);
     box->paint(paintInfo, LayoutPoint(), layers);
     // Note we're ignoring any layers encountered.
 }
 
 } // namespace blink