There is no such thing as Chromium browser, just packages of Chromium source built by different distributors like Ubuntu, Red Hat, etc. You might ask to be called back when a particular packaging other than Chrome gets significant share, but if you ask when Chromium (including all packagings) gets significant share, that's already happened.
The whole point of the "Chrome is proprietary" argument is that we don't know exactly what Google added to Chromium.
Since the diff between Chrome and Chromium is not open-source, there's no way to verify that Google only added what they claim to have added. For example, we wouldn't know if they slipped in an NSA backdoor along with a bunch of plugins.
> Mozilla employs someone who is (was?) anti-gay marriage.
Funny that Mozilla had employed a stance, but grammar aside, Brendan Eich isn't employed in Mozilla anymore. In fact he quit under pressure for contributing to an anti-gay marriage campaign.
Eric S. is as far as I know still employed by Google.