Remove PaintPhaseSelection.

Remove PaintPhaseSelection.

This is just a mechanical removal. No logic changes
beyond removing the PaintPhaseSelection checks.
Most of these are just early returns to avoid doing
unnecessary work if we're only painting selections.
But now that we paint selections during the foreground
paint phase, we no longer need the early returns since
we're going to paint everything anyways.

R=esprehn@chromium.org

Committed: https://chromium.googlesource.com/external/mojo/+/b6195dc897a9e49d3b8de220b57a8468436ebcb3

[esprehn, 2015-01-30 01:00:34]

esprehn@chromium.org changed reviewers:
+ esprehn@chromium.org

[esprehn, 2015-01-30 01:00:35]

lgtm

[ojan, 2015-01-30 01:18:30]

Committed patchset #1 (id:1) manually as
b6195dc897a9e49d3b8de220b57a8468436ebcb3 (presubmit successful).