It looks like Google Chrome for Android is trying out scheduled downloads. The feature shows up in the latest Chrome Canary 86 version, but as 9to5Google notes, it doesn't seem to be fully operational yet. But what it does is let you set a time and date for when a download within the mobile browser should start. And it looks like it would even let you specify when a download begins based on your Wi-Fi connection. When you set a download schedule, Chrome will get a "Scheduled for later" tab where you can manage your downloads. If this feature gets a wider release, it's going to be useful for when you want to save data and battery life but have to download a file.