Google's upcoming Pixel 4 and Pixel 4 XL have been rumored to sport 90 Hz screens, through a report from about a month ago. And now this seems to have been confirmed by a comment in the Android 10 source code. The ever-enterprising folks over at XDA Developers dug through the source of the newest Android release, which Google made public the other day, and found several intriguing commits relating to display refresh rate. One of these describes content-based fps detection, while another describes the implementation of an overlay that will show when the device is running at 60Hz vs...