A lot of Chromebooks (I suspect a majority, even) are on x86 processors. Therefore, if ChromeOS is folded into Android, I would speculate that one result is that x86 becomes a fully supported Android platform rather than them losing that platform outright.

(And if they do that, then it shouldn't be hard to also include some version of Flex. Or worst case in that universe I'd give good odds of LineageOS or someone doing an unofficial version for arbitrary PC hardware.)