In https://bugs.webkit.org/show_bug.cgi?id=113258, I added a 0-delay timer so that we'd coalesce intrinsic content size changes. However, didUpdateGeometry still immediately updates intrinsic content size without coalescing. <rdar://problem/13935042>
Created attachment 203398 [details] patch
Created attachment 203399 [details] patch
http://trac.webkit.org/changeset/151057