Improve MessageLoop's comments.

Improve MessageLoop's comments.

Remove incorrect mention of RefCountedThreadSafe from DeleteSoon's
comment.

Replace mention of PostDelayedTask with ReleaseSoon in ReleaseSoon's
comment.

BUG=

Committed: https://crrev.com/9be04f02356b1bb6ebeb8048e4d6449f5d3f8bee
Cr-Commit-Position: refs/heads/master@{#297870}

[maniscalco, 2014-09-29 21:26:25]

maniscalco@chromium.org changed reviewers:
+ mark@chromium.org

[maniscalco, 2014-09-29 21:26:26]

Hi Mark, would you please review this comment only change?  

Please double check me on this: there is no reason DeleteSoon's T must be
derived from RefCountedThreadSafe, right?

[Mark Mentovai, 2014-09-29 21:49:57]

mark@chromium.org changed reviewers:
+ akalin@chromium.org

[Mark Mentovai, 2014-09-29 21:49:57]

→akalin

[maniscalco, 2014-10-02 17:40:09]

On 2014/09/29 21:49:57, Mark Mentovai wrote:
> →akalin

Mark, I don't think akalin works on Chrome any more.  Is there someone else who
should should review this?

[Mark Mentovai, 2014-10-02 17:46:12]

You’re right, looks like he’s gone. He had introduced or modified these
interfaces, so I thought it’d be good to run it by him, but this is fine. LGTM.

[maniscalco, 2014-10-02 17:50:01]

On 2014/10/02 17:46:12, Mark Mentovai wrote:
> You’re right, looks like he’s gone. He had introduced or modified these
> interfaces, so I thought it’d be good to run it by him, but this is fine.
LGTM.

I see.  Thanks.

[maniscalco, 2014-10-02 17:50:31]

The CQ bit was checked by maniscalco@chromium.org

[commit-bot: I haz the power, 2014-10-02 17:52:02]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/615693002/1

[commit-bot: I haz the power, 2014-10-02 18:35:41]

Committed patchset #1 (id:1) as 1b52298e81c01a999f5fdd1c0e5ab3f46cd2aba2

[commit-bot: I haz the power, 2014-10-02 18:37:32]

Patchset 1 (id:??) landed as
https://crrev.com/9be04f02356b1bb6ebeb8048e4d6449f5d3f8bee
Cr-Commit-Position: refs/heads/master@{#297870}