Too Long; Didn't Read
Google's Best Semi-Secret Experiment: Chrome Flags. Chrome Flags are features that are not yet added by default in the browser, but you still have the opportunity to enable it in your browser. Many of the flags are still in the development phase and they are subject to a lot of change due to which you should not completely rely on them. The most recent pattern is picture-in-picture mode, which permits you to jump out of a window on your cell phone to watch a video or other content over another application.