Apparently, the new policy would apply to the default browser in Android version 4.3, which was released some time in the middle of 2013 and known by its popular moniker, Jelly Bean, and earlier. In other words, this would translate to approximately 67% of the billion-plus Android devices that are in use at the moment, although some users might have actually updated their browsers to newer versions already.
Hence, this particular policy would not affect browsers that are in Android 4.4 KitKat or Android 5.0 Lollipop devices, which were released in October 2013 and November 2014, respectively. It was Rafay Baloch, a Pakistani security researcher, who came across Google’s shift a few months back, after he stumbled upon a handful of bugs in the old Android browser.