Fire a callback when the video reaches a new frame.
Returns a promise which resolves after callback (which may be async) completes.
MAINTENANCE_TODO: Find a way to implement this for browsers without requestVideoFrameCallback as
well, similar to the timeWatcher path in startPlayingAndWaitForVideo. If that path is proven to
work well, we can consider getting rid of the requestVideoFrameCallback path.
Fire a
callbackwhen the video reaches a new frame. Returns a promise which resolves aftercallback(which may be async) completes.MAINTENANCE_TODO: Find a way to implement this for browsers without requestVideoFrameCallback as well, similar to the timeWatcher path in startPlayingAndWaitForVideo. If that path is proven to work well, we can consider getting rid of the requestVideoFrameCallback path.