Fix bad assertion under HTMLTreeBuilder::processStartTagForInBody() when handling framesets.
<rdar://problem/30237241>
Created attachment 300545 [details] Patch
Comment on attachment 300545 [details] Patch r=me
Comment on attachment 300545 [details] Patch Clearing flags on attachment: 300545 Committed r211645: <http://trac.webkit.org/changeset/211645>
All reviewed patches have been landed. Closing bug.