Currently the CheckerboardReportService API is blocked except if accessed from about:checkerboard. I think it's OK that it requires privileged access (even though there's nothing secretive about it) but otherwise should not limit access to other Gecko code IMO. The use case I have in mind right now is a talos APZ scroll test, but I still think it should be accessible to Gecko code in general.

ehsan, we added this CheckerboardReportService API back in bug 1238042 and exposed it to about:checkerboard (which we kept unprivileged) explicitly via the check at [1]. Do you have any concerns about relaxing the URL check and allowing any privileged code to access it? I agree with avi that there isn't really anything secretive about it. [1] http://mxr.mozilla.org/mozilla-central/source/gfx/layers/apz/util/CheckerboardReportService.cpp?rev=77d65c5c2422&mark=136-136#129

Allowing privileged code access here seems fine to me!

Does this work for you? I tested both e10s and non-e10s to verify that it is accessible in about:checkerboard and other chrome pages (like about:about) but is NOT accessible in web content or unprivileged pages like about:blank.

Comment on attachment 8749745 [details] [diff] [review] Patch Review of attachment 8749745 [details] [diff] [review]: ----------------------------------------------------------------- Confirmed works for me. Thanks.