Add SkRecord::defrag().

Add SkRecord::defrag().

Called by SkRecordOptimize(), this moves all the NoOps to the end and
slices them off.

This implementation with std::remove_if() is linear and doesn't malloc.

No diffs: https://gold.skia.org/search2?issue=1461663003&unt=true&query=source_type%3Dgm&master=false

BUG=skia:

Committed: https://skia.googlesource.com/skia/+/c3c6194ba2b90fde57d8d0bc1d6302656f0dae27

[mtklein, 2015-11-18 22:50:05]

The CQ bit was checked by mtklein@google.com to run a CQ dry run

[commit-bot: I haz the power, 2015-11-18 22:50:13]

Dry run: CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1461663003/60001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1461663003/60001

[commit-bot: I haz the power, 2015-11-18 23:01:48]

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

[commit-bot: I haz the power, 2015-11-18 23:01:48]

Dry run: This issue passed the CQ dry run.

[mtklein_C, 2015-11-18 23:29:32]

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

[mtklein_C, 2015-11-18 23:31:50]

Description was changed from

==========
Add SkRecord::defrag().

Called by SkRecordOptimize(), this moves all the NoOps to the end and
slices them off.

BUG=skia:
==========

to

==========
Add SkRecord::defrag().

Called by SkRecordOptimize(), this moves all the NoOps to the end and
slices them off.

This implementation with std::remove_if() is linear and doesn't malloc.

No diffs:
https://gold.skia.org/search2?issue=1461663003&unt=true&query=source_type%3Dg...

BUG=skia:
==========

[reed1, 2015-11-19 15:07:05]

lgtm

[mtklein, 2015-11-19 15:10:56]

The CQ bit was checked by mtklein@google.com

[commit-bot: I haz the power, 2015-11-19 15:11:03]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1461663003/60001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1461663003/60001

[commit-bot: I haz the power, 2015-11-19 15:23:52]

Committed patchset #4 (id:60001) as
https://skia.googlesource.com/skia/+/c3c6194ba2b90fde57d8d0bc1d6302656f0dae27