The most important problem is that an extension that blocks multi but not e10s (e.g. a bootstrapped extension) will show up as it did for the e10s single experiment, which won't be super clear.
Created attachment 8859808 [details] [diff] [review] Fix cohort names in edge cases for the beta experiment There are a few cases where the cohort names aren't as clear as they could be. In those cases, we can recuperate the data by looking at a combination of the prefs that were set, but it would be nice to fix them up. This also fixes a bug where if the user explicitly opted into e10s (that is, they set browser.tabs.remote.force-enable) they wouldn't be placed in the multi experiment. MozReview-Commit-ID: 5wpfQDvbJJ3
Created attachment 8860202 [details] [diff] [review] Updated patch After talking to Felipe on IRC, we decided to tweak a couple of things here. In particular, the suffix -test in the cohort will mean "eligible for e10s but disqualified by an addon from multi." -control will mean "selected to not be in e10s at all" and to reduce confusion, we're not going to bother with the cohort prefix for the multi buckets since we don't have different addon policies for multi.
Pushed by email@example.com: https://hg.mozilla.org/integration/mozilla-inbound/rev/4bc74de54b5b Put people who forced into e10s into the multi test group. r=Felipe
Comment on attachment 8860202 [details] [diff] [review] Updated patch Approval Request Comment [Feature/Bug causing the regression]: bug 1349363 [User impact if declined]: Some users will not be included in the e10s-multi experiment. [Is this code covered by automated tests?]: No :( [Has the fix been verified in Nightly?]: No. [Needs manual test from QE? If yes, steps to reproduce]: See bug 1352388 [List of other uplifts needed for the feature/fix]: n/a [Is the change risky?]: No. [Why is the change risky/not risky?]: This simply changes a couple of strings and sets a variable that should have been set. [String changes made/needed]: n/a
Comment on attachment 8860202 [details] [diff] [review] Updated patch This patch is for e10s-multi experiment. Beta54+. Should be in 54 beta 2.