Migrate WTF::Deque::last() to ::back()

Migrate WTF::Deque::last() to ::back()

As discussed on platform-architecture-dev [0], there is interest in
normalizing the methods of WTF classes to better align with std classes.

There are no functional changes.

[0] https://groups.google.com/a/chromium.org/d/topic/platform-architecture-dev/I7jnz4p1h84/discussion

BUG=662431
Review-Url: https://codereview.chromium.org/2747213002
Cr-Commit-Position: refs/heads/master@{#456989}
Committed: https://chromium.googlesource.com/chromium/src/+/555dee3871c4fe9bdcbba6c1f226461772229b78

[pilgrim_google, 2017-03-14 17:38:45]

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

[pilgrim_google, 2017-03-14 17:38:56]

pilgrim@chromium.org changed reviewers:
+ esprehn@chromium.org, haraken@chromium.org, yutak@chromium.org

[commit-bot: I haz the power, 2017-03-14 17:39:21]

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

[haraken, 2017-03-14 18:10:29]

LGTM

[commit-bot: I haz the power, 2017-03-14 19:35:15]

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

[commit-bot: I haz the power, 2017-03-14 19:35:16]

Dry run: This issue passed the CQ dry run.

[pilgrim_google, 2017-03-15 02:27:40]

The CQ bit was checked by pilgrim@chromium.org

[pilgrim_google, 2017-03-15 02:27:40]

The patchset sent to the CQ was uploaded after l-g-t-m from haraken@chromium.org
Link to the patchset: https://codereview.chromium.org/2747213002/#ps20001
(title: "rebase")

[commit-bot: I haz the power, 2017-03-15 02:28:10]

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, 2017-03-15 04:17:02]

CQ is committing da patch.

Bot data: {"patchset_id": 20001, "attempt_start_ts": 1489544860097070,
"parent_rev": "1e5f48b78ace35c00d9dd492df17625d3acb897c", "commit_rev":
"9929b7297027fcbf2dffdb292d7b2cb4b8feaaad"}

[commit-bot: I haz the power, 2017-03-15 04:22:01]

CQ is committing da patch.

Bot data: {"patchset_id": 20001, "attempt_start_ts": 1489544860097070,
"parent_rev": "363491cfb8b1276469310322be9ed07670297b43", "commit_rev":
"555dee3871c4fe9bdcbba6c1f226461772229b78"}

[commit-bot: I haz the power, 2017-03-15 04:22:46]

Description was changed from

==========
Migrate WTF::Deque::last() to ::back()

As discussed on platform-architecture-dev [0], there is interest in
normalizing the methods of WTF classes to better align with std classes.

There are no functional changes.

[0]
https://groups.google.com/a/chromium.org/d/topic/platform-architecture-dev/I7...

BUG=662431
==========

to

==========
Migrate WTF::Deque::last() to ::back()

As discussed on platform-architecture-dev [0], there is interest in
normalizing the methods of WTF classes to better align with std classes.

There are no functional changes.

[0]
https://groups.google.com/a/chromium.org/d/topic/platform-architecture-dev/I7...

BUG=662431

Review-Url: https://codereview.chromium.org/2747213002
Cr-Commit-Position: refs/heads/master@{#456989}
Committed:
https://chromium.googlesource.com/chromium/src/+/555dee3871c4fe9bdcbba6c1f226...
==========

[commit-bot: I haz the power, 2017-03-15 04:22:48]

Committed patchset #2 (id:20001) as
https://chromium.googlesource.com/chromium/src/+/555dee3871c4fe9bdcbba6c1f226...