"Chrome Confirm to quit" for closing windows
By bam.tho... on February 10, 2011 18:31 (imported from Google Code)
Instead of a pop up asking if we are sure we want to close (which requires us to click yes or no), this new Google Chrome confirm to quit feature is really nice. It requires that you hold down cmd+q for a little while to 'confirm' the quit.
http://www.chromium.org/developers/design-documents/confirm-to-quit-experiment