DM: track a direct/indirect bit for each Sink too.

DM: track a direct/indirect bit for each Sink too.

The decoding tests can now veto indirect sinks like pipe-8888.

This moves Sink type detection from automatic to explicit; I can't think of any
way to automatically differentiate pipe-8888 from 8888 based only on the
output.  (They should ideally be identical, after all.)

BUG=skia:4138
Committed: https://skia.googlesource.com/skia/+/99cab4e3081e7e0ae8a72eb53cb42b1bef3719a3

[mtklein_C, 2015-07-30 20:05:18]

mtklein@chromium.org changed reviewers:
+ scroggo@google.com

[mtklein_C, 2015-07-30 20:05:23]

The CQ bit was checked by mtklein@chromium.org to run a CQ dry run

[commit-bot: I haz the power, 2015-07-30 20:05:32]

Dry run: CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1263113002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1263113002/1

[commit-bot: I haz the power, 2015-07-30 20:13:32]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2015-07-30 20:13:33]

Dry run: This issue passed the CQ dry run.

[scroggo, 2015-07-31 13:42:30]

The CQ bit was checked by scroggo@google.com

[scroggo, 2015-07-31 13:42:31]

lgtm

[commit-bot: I haz the power, 2015-07-31 13:42:38]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1263113002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1263113002/1

[commit-bot: I haz the power, 2015-07-31 13:43:07]

Committed patchset #1 (id:1) as
https://skia.googlesource.com/skia/+/99cab4e3081e7e0ae8a72eb53cb42b1bef3719a3