Use container::back() and container::pop_back() for content.

Use container::back() and container::pop_back() for content.

Also convert !container.size() to container.empty().

Committed: https://crrev.com/76ee1f4987d0d00cd33a58c6c072031e03c0d2fd
Cr-Commit-Position: refs/heads/master@{#404452}

[Lei Zhang, 2016-07-07 23:27:44]

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

[clamy, 2016-07-08 15:25:21]

Thanks for the cleanup! Lgtm.

[Lei Zhang, 2016-07-08 17:17:25]

The CQ bit was checked by thestig@chromium.org

[commit-bot: I haz the power, 2016-07-08 17:17:59]

CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[commit-bot: I haz the power, 2016-07-08 18:54:59]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-07-08 18:55:03]

CQ bit was unchecked.

[commit-bot: I haz the power, 2016-07-08 18:55:48]

Description was changed from

==========
Use container::back() and container::pop_back() for content.

Also convert !container.size() to container.empty().
==========

to

==========
Use container::back() and container::pop_back() for content.

Also convert !container.size() to container.empty().

Committed: https://crrev.com/76ee1f4987d0d00cd33a58c6c072031e03c0d2fd
Cr-Commit-Position: refs/heads/master@{#404452}
==========

[commit-bot: I haz the power, 2016-07-08 18:55:50]

Patchset 1 (id:??) landed as
https://crrev.com/76ee1f4987d0d00cd33a58c6c072031e03c0d2fd
Cr-Commit-Position: refs/heads/master@{#404452}