It makes easier to debug and measure some ongoing implementation.
Created attachment 233891 [details] patch
Comment on attachment 233891 [details] patch LGTM, r=me. But cq-, because this patch isn't appliable, because it depends on bug134339.
Created attachment 234333 [details] patch for landing
Comment on attachment 234333 [details] patch for landing Clearing flags on attachment: 234333 Committed r170750: <http://trac.webkit.org/changeset/170750>
All reviewed patches have been landed. Closing bug.