If you're looking to Download CornerTube on your Chromebook laptop Then read the following guideline.

Watch your YouTube videos in Picture-in-Picture (PiP) mode from anywhere. • Today Widget: CornerTube comes with a Today Widget that detects YouTube link in your clipboard, your favorite YouTube video is just a tap away from your Notification Center. • Action Extension: CornerTube also has an Action Extension to let you watch YouTube videos from any app. Simple tap and hold on a YouTube link and select "Open in CornerTube" from the list, it couldn't be easier. • Split View multitasking: CornerTube works in Split View multitasking too. Swipe from the right side to activate Split View. Note: Split View multitasking only works on iPad Air 2, iPad mini 4 and iPad Pro or better. • In-app Search: Search for your favorite YouTube videos right inside the app. Enjoy your videos!