Calculate the correct available height for content

Source/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 2819 matching lines @@
         case FitContent:
         case FillAvailable:
             return adjustContentBoxLogicalHeightForBoxSizing(computeIntrinsicLogicalContentHeightUsing(logicalHeight, intrinsicLogicalHeight(), borderAndPaddingHeight()));
         default:
             return intrinsicLogicalHeight();
     }
 }
 
 LayoutUnit RenderBox::availableLogicalHeight(AvailableLogicalHeightType heightType) const
 {
-    return constrainLogicalHeightByMinMax(availableLogicalHeightUsing(style()->logicalHeight(), heightType), -1);
+    // http://www.w3.org/TR/CSS2/visudet.html#propdef-height - We are interested in the content height.
+    return constrainContentBoxLogicalHeightByMinMax(availableLogicalHeightUsing(style()->logicalHeight(), heightType), -1);
 }
 
 LayoutUnit RenderBox::availableLogicalHeightUsing(const Length& h, AvailableLogicalHeightType heightType) const
 {
     if (isRenderView())
         return isHorizontalWritingMode() ? toRenderView(this)->frameView()->visibleHeight() : toRenderView(this)->frameView()->visibleWidth();
 
     // We need to stop here, since we don't want to increase the height of the table
     // artificially.  We're going to rely on this cell getting expanded to some new
     // height, and then when we lay out again we'll use the calculation below.
@@ skipping 1816 matching lines @@
 
         // We need the old border box size only when the box has background or box decorations.
         if (!style()->hasBackground() && !style()->hasBoxDecorations())
             return;
     }
 
     ensureRareData().m_previousBorderBoxSize = size();
 }
 
 } // namespace WebCore