Now, with Play Services v24.12, which is still in beta, this option is now there without the need to enable any experimental flags. We’ve always had the option to export our credentials as a CSV file, but it was just not possible to do it the other way around, unless you used the Chrome desktop browser.
Image Credit: AssembleDebug
The process looks super straightforward, as you can see in the screenshots above. One thing that’s a bit of a mystery is what exactly gets imported, although it appears that duplicates do get skipped. Since this is still in beta, there’s of course a chance that this will be further tweaked and streamlined as we get closer to a widespread release, which is likely around the corner.