favor DCHECK_CURRENTLY_ON for better logs in content/browser/[a-d]*

favor DCHECK_CURRENTLY_ON for better logs in content/browser/[a-d]*

BUG=466848
Committed: https://crrev.com/fbcdc27a22dd7ce7308de1dddd6377aa348a9b4a
Cr-Commit-Position: refs/heads/master@{#320527}

[Mostyn Bramley-Moore, 2015-03-12 23:54:59]

mostynb@opera.com changed reviewers:
+ jyasskin@chromium.org

[Mostyn Bramley-Moore, 2015-03-12 23:55:50]

@Jeffrey: does this sort of thing look worthwhile to you?  If so, I can run my
bash one-liner over more of the tree...

[Jeffrey Yasskin, 2015-03-13 01:04:19]

On 2015/03/12 23:55:50, Mostyn Bramley-Moore wrote:
> @Jeffrey: does this sort of thing look worthwhile to you?  If so, I can run my
> bash one-liner over more of the tree...

Yes. I was supposed to finish this conversion, but I ran out of steam. LGTM

[Mostyn Bramley-Moore, 2015-03-13 07:58:53]

mostynb@opera.com changed reviewers:
+ nasko@chromium.org

[Mostyn Bramley-Moore, 2015-03-13 07:59:16]

@nasko: can you give this OWNERS approval?

[nasko, 2015-03-13 16:24:19]

LGTM

[Mostyn Bramley-Moore, 2015-03-13 16:41:26]

The CQ bit was checked by mostynb@opera.com

[commit-bot: I haz the power, 2015-03-13 16:41:42]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1008613002/1

[commit-bot: I haz the power, 2015-03-13 17:59:06]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-03-13 18:00:03]

Patchset 1 (id:??) landed as
https://crrev.com/fbcdc27a22dd7ce7308de1dddd6377aa348a9b4a
Cr-Commit-Position: refs/heads/master@{#320527}