TopSites: various small cleanups

TopSites: various small cleanups

- Update some comments.
- Replace some iterators with range-based fors.
- Add some "const"s.
- etc

BUG=718413
Review-Url: https://codereview.chromium.org/2881753002
Cr-Commit-Position: refs/heads/master@{#471748}
Committed: https://chromium.googlesource.com/chromium/src/+/481b55a2fa48d01f9c8357dd8aad039ffaf90f69

[Marc Treib, 2017-05-12 12:10:14]

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

[commit-bot: I haz the power, 2017-05-12 12:10:27]

Dry run: 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, 2017-05-12 13:01:14]

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

[commit-bot: I haz the power, 2017-05-12 13:01:15]

Dry run: This issue passed the CQ dry run.

[Marc Treib, 2017-05-12 13:06:52]

Description was changed from

==========
TopSites: various small cleanups

BUG=718413
==========

to

==========
TopSites: various small cleanups

- Update some comments.
- Replace some iterators with range-based fors.
- Add some "const"s.
- etc

BUG=718413
==========

[Marc Treib, 2017-05-12 13:07:09]

treib@chromium.org changed reviewers:
+ sdefresne@chromium.org

[Marc Treib, 2017-05-12 13:07:09]

A bunch of small things I noticed while reading the code. PTAL!

[sdefresne, 2017-05-15 13:01:13]

lgtm

[Marc Treib, 2017-05-15 13:05:31]

The CQ bit was checked by treib@chromium.org

[commit-bot: I haz the power, 2017-05-15 13:05:40]

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, 2017-05-15 13:53:54]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1494853531057140, "parent_rev":
"578c5aa7e965ad70d31a0372fb7532b030781d05", "commit_rev":
"481b55a2fa48d01f9c8357dd8aad039ffaf90f69"}

[commit-bot: I haz the power, 2017-05-15 13:54:05]

Description was changed from

==========
TopSites: various small cleanups

- Update some comments.
- Replace some iterators with range-based fors.
- Add some "const"s.
- etc

BUG=718413
==========

to

==========
TopSites: various small cleanups

- Update some comments.
- Replace some iterators with range-based fors.
- Add some "const"s.
- etc

BUG=718413

Review-Url: https://codereview.chromium.org/2881753002
Cr-Commit-Position: refs/heads/master@{#471748}
Committed:
https://chromium.googlesource.com/chromium/src/+/481b55a2fa48d01f9c8357dd8aad...
==========

[commit-bot: I haz the power, 2017-05-15 13:54:06]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/chromium/src/+/481b55a2fa48d01f9c8357dd8aad...