...seeing that there is no java.io.Reader.available.  (And then, there's no good
way to map from java.io.Reader.ready's boolean value to
css.io.XInputStream.available's long value, so conservatively map true to 1.)

But I have no idea how to trigger this code.

Change-Id: I18d12e0d968141410a1b56e700ed544edceda97c