Make STLDeleteValues delete behind the iterator.

Make STLDeleteValues delete behind the iterator.

Make STLDeleteValues do like STLDeleteElements and increment the
iterator before deleting the value. This protects against modifications
to the container that may invalidate the current iterator.

STLDeleteContainerPairSecondPointers already provides this ability.

Committed: https://crrev.com/c2af413b751be6f483351ec9dfb4b36e2b21e40e
Cr-Commit-Position: refs/heads/master@{#321271}

[Reilly Grant (use Gerrit), 2015-03-18 23:27:54]

reillyg@chromium.org changed reviewers:
+ thestig@chromium.org

[Reilly Grant (use Gerrit), 2015-03-18 23:27:55]

thestig@, please take a look.

[Lei Zhang, 2015-03-18 23:31:44]

lgtm

[Reilly Grant (use Gerrit), 2015-03-18 23:41:14]

The CQ bit was checked by reillyg@chromium.org

[commit-bot: I haz the power, 2015-03-18 23:42:54]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1020673002/1

[commit-bot: I haz the power, 2015-03-19 02:28:50]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-03-19 02:30:13]

Patchset 1 (id:??) landed as
https://crrev.com/c2af413b751be6f483351ec9dfb4b36e2b21e40e
Cr-Commit-Position: refs/heads/master@{#321271}