Clean up some dead code.

Clean up some dead code.

This cleans up tools/ code, or code that should have been in tools/.

The only interesting code change trims features off of PictureRenderer.
It's still in use by a few useful-looking tools.

BUG=skia:

Committed: https://skia.googlesource.com/skia/+/0c768a2f330e0e8f0883e174260928097d33e526

[mtklein_C, 2015-10-20 17:52:48]

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

[commit-bot: I haz the power, 2015-10-20 17:52:52]

Dry run: CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1416913003/20001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1416913003/20001

[commit-bot: I haz the power, 2015-10-20 17:54:40]

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

[commit-bot: I haz the power, 2015-10-20 17:54:41]

Dry run: Try jobs failed on following builders:
  Build-Win-MSVC-x86_64-Debug-Trybot on client.skia.compile (JOB_FAILED,
http://build.chromium.org/p/client.skia.compile/builders/Build-Win-MSVC-x86_6...)

[mtklein_C, 2015-10-20 20:40:10]

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

[mtklein_C, 2015-10-20 20:40:11]

HELP!

[mtklein_C, 2015-10-20 20:45:34]

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

[commit-bot: I haz the power, 2015-10-20 20:45:41]

Dry run: CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1416913003/40001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1416913003/40001

[commit-bot: I haz the power, 2015-10-20 20:57:50]

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

[commit-bot: I haz the power, 2015-10-20 20:57:51]

Dry run: This issue passed the CQ dry run.

[mtklein_C, 2015-10-20 21:00:15]

mtklein@chromium.org changed reviewers:
+ reed@google.com
- bungeman@google.com

[mtklein_C, 2015-10-20 21:00:22]

The CQ bit was checked by mtklein@chromium.org

[commit-bot: I haz the power, 2015-10-20 21:00:31]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1416913003/40001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1416913003/40001

[commit-bot: I haz the power, 2015-10-20 21:00:32]

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 valid reviewer(s) till 2015-10-21 03:00 UTC

[reed1, 2015-10-20 21:28:10]

lgtm

[commit-bot: I haz the power, 2015-10-20 21:29:13]

Committed patchset #3 (id:40001) as
https://skia.googlesource.com/skia/+/0c768a2f330e0e8f0883e174260928097d33e526