Most likely, it will be added as a per-app permission like everything else. Like location and contact information, there will be apps that use dark patterns which ask for this by default and just bank on enough people being lazy enough to just click through when they install FlappyBirdsGo2020.

Google will shrug its shoulders and blame its users for not being responsible and for 'bad actors' who were in no way enabled by the Goog's primary objective of maximizing its stock price.