It is especially useful when we have a long list of users and their avatar.
Without this it would start anything between 10-100 http connections to
fetch images that are not visible on screen. With this patch we improve
performance of our app with very little effort and no downsides.
This enable native lazy loading of images when user scroll them into view, as described in https://developer.mozilla.org/en-US/docs/Web/Performance/Lazy_loading
It is especially useful when we have a long list of users and their avatar. Without this it would start anything between 10-100 http connections to fetch images that are not visible on screen. With this patch we improve performance of our app with very little effort and no downsides.