Follow the method that summing all channels for analysis.
Created attachment 132984 [details]
(In reply to comment #1)
> Created an attachment (id=132984) [details]
Uploaded a patch.
Comment on attachment 132984 [details]
Clearing flags on attachment: 132984
Committed r111584: <http://trac.webkit.org/changeset/111584>
All reviewed patches have been landed. Closing bug.