Comment 1 for bug 1968167

Looking at the changes, it's a huge list. As you mentioned (and as mentioned by the blogpost), those are mostly refactoring changes, but this means there's a lot of risk of introducing accidental regressions. Especially SO LATE in the cycle.

Normally I'd be against accepting it, but since in theory this does not break FF (as there are no features and, at least in theory, no ABI/API is broken), let's check up with the Desktop team if they would be fine with such 'probably slightly somewhat risky' upload a week before Final Freeze.