[sliekasbekelniu]

I would guess that this has to do with Mozilla taking Yahoo/Yandex/Baidu as the primary search engines in Firefox in relative countries[1]... But I'm no insider so I can't tell you anything for certain.

[1] https://blog.mozilla.org/blog/2014/11/19/promoting-choice-an...

[iends]

I don't think this is the case. Google has rejected a number of higher profile open source projects this year, in addition to Mozilla.