Commits on Nov 9, 2017

1. Fix some issues with scrollbars …

   Scrollbars would scroll horizontally instead of sticking to the edge of
   the frame and were also not visible at all on iframes. This change fixes
   those issues by adding them to the containing reference frame. As part
   of this change, iframe background colors are also attached to the
   reference frame and only painted over the frame rect.

   

   mrobinson committed Nov 9, 2017

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