With the WebView Support Library we want to provide as much functionality as possible from the WebView APK to app developers. We will dupe many of the android.webkit classes to avoid depending on a certain Android version - but there are some classes, especially utility classes like DateSorter and URLUtil, that are not related to the WebView APK.

The question is: should we dupe these as well, or just leave them be?
It seems error-prone / unnecessary to dupe them if they can be self-contained in the Android platform anyway.
On the other hand if we don't dupe these classes users will be stuck with their platform version of them - though we probably shouldn't see implementation changes to these classes anytime soon anyway?

(Torne, I think you touched on this briefly somewhere, I just can't remember when/where ;)).