Bug#921121: the wrong version of widevine is being installed.

[Kathryn Tolsen]

I have manually installed a newer version of widevine into my profile and
it resolves this issue. I will wait for the user who actually figured it
out to correct their response so that it reaches the BTS. They are able to
explain the source of the problem far better than I could. It seems that
the problem is due to some sort of upstream service that matches components
with particular FF versions, it seems to think the old widevine that 60.4
installed will also work with 60.5 and it does not.