Just do hard-recalc on stream refresh. That takes care of all our needs.

Change-Id: I9a454089843d1373153988a29843b95db22ee284
Fine-tune our refresh policy during streaming.

Change-Id: I9eff0bc0e4087261e2283a55211c8a9daf2a8b24
Handle "refresh on empty line" setting from the UI.

With this set, when we detect an empty line, we'll trigger refresh and
discard the line.  If not set, we'll import an empty line.

Change-Id: Ic3ccb1adbd0c7273c3affff82a2d111c378f2af3
Don't forget to set document modified afterward.

Change-Id: I5b2b9a3dad2aeee6bc5a4a4767b239c92865b2f4
We don't need these yet.

Change-Id: Iff875a690f319eb92ccfb8010853714ac60dcc9a