We could check whether hidden Android WebView APIs used by android.webkit exist on some of the most common Android devices (by trying to call those methods through reflection) - as an early check to ensure our reflection calls won't fail.

This will be checked eventually anyway through our testing of the support library, but it might be a good idea to perform an initial check like this since it will probably take a lot of time and effort to get to the state where we have a full-blown support library implementation.