Thanks for the review! Obviously, this layers on top of the patches from bug 1159042, so I'll land this after that bugs' patches have stuck. Also FWIW, I verified that this patch does let me flip the pref to fix the testcase in bug 1510369. (i.e. I verified that the pref does indeed allow you to turn off dynamic reflow roots.)
Bug 1510369 Comment 4 Edit History
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Thanks for the review! Obviously, this layers on top of the patches from bug 1159042, so I'll land this after that bugs' patches have stuck. Also FWIW, I verified that this patch does let me flip the pref to fix the testcase in bug 1510360. (i.e. I verified that the pref does indeed allow you to turn off dynamic reflow roots.)