Don't test the old picture backend anymore.

Don't test the old picture backend anymore.

This saves a bunch of CPU time in DM, and even better, lets us tear it down!

BUG=skia:

Committed: https://skia.googlesource.com/skia/+/a9ceaf5364f34fbab93032bb20a1d16be86c437f

[mtklein, 2014-09-27 14:51:17]

mtklein@google.com changed reviewers:
+ mtklein@google.com, robertphillips@google.com

[mtklein, 2014-09-27 14:51:21]

The CQ bit was checked by mtklein@google.com

[commit-bot: I haz the power, 2014-09-27 14:51:58]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/612603002/1

[commit-bot: I haz the power, 2014-09-27 14:51:59]

Note for Reviewers:
The CQ is waiting for an approval.
If you believe that the CL is not ready yet, or if you would like to L-G-T-M
with comments then please uncheck the CQ checkbox.

Waiting for LGTM from a valid reviewer till 2014-09-27 20:51 UTC

[commit-bot: I haz the power, 2014-09-27 20:52:07]

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

[commit-bot: I haz the power, 2014-09-27 20:52:08]

No LGTM from a valid reviewer yet. Please ask for an LGTM from a
full Skia committer from
https://skia.googlesource.com/skia/+/master/CQ_COMMITTERS

[robertphillips, 2014-09-29 15:44:02]

lgtm

[robertphillips, 2014-09-29 15:44:28]

The CQ bit was checked by robertphillips@google.com

[commit-bot: I haz the power, 2014-09-29 15:44:40]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/612603002/1

[commit-bot: I haz the power, 2014-09-29 15:44:56]

Committed patchset #1 (id:1) as a9ceaf5364f34fbab93032bb20a1d16be86c437f