For example http://www.sambushell.com/morepower/ We are repeatedly reconstructing the render tree.
Created attachment 235619 [details] patch
<rdar://problem/16828238>
Comment on attachment 235619 [details] patch View in context: https://bugs.webkit.org/attachment.cgi?id=235619&action=review > Source/WebCore/html/HTMLPlugInImageElement.cpp:231 > // FIXME: There shoudn't be need to force render tree reconstruction here. I would prefer a blank line before the comment.
http://trac.webkit.org/changeset/171702