Move [Homepage,Options,Update,DevTools]URL out of Extension

Move [Homepage,Options,Update,DevTools]URL out of Extension

This CL follows https://codereview.chromium.org/11644057/
 (for thread-checking addition to finished_parsing_manifest_ CHECK in Extension)

BUG=159265

[Yoyo Zhou, 2013-01-02 23:01:45]

I think we need a better way to coordinate. Joe Thomas has already
started on 3 out of these 4:
devtools: https://codereview.chromium.org/11624036/
options and update_url: https://codereview.chromium.org/11726002/

[Devlin, 2013-01-03 18:59:46]

On 2013/01/02 23:01:45, Yoyo Zhou wrote:
> I think we need a better way to coordinate. Joe Thomas has already
> started on 3 out of these 4:
> devtools: https://codereview.chromium.org/11624036/
> options and update_url: https://codereview.chromium.org/11726002/

Is there a reason to keep this open, or is it safe to close the CL?

[Yoyo Zhou, 2013-01-04 22:44:26]

On 2013/01/03 18:59:46, D Cronin wrote:
> On 2013/01/02 23:01:45, Yoyo Zhou wrote:
> > I think we need a better way to coordinate. Joe Thomas has already
> > started on 3 out of these 4:
> > devtools: https://codereview.chromium.org/11624036/
> > options and update_url: https://codereview.chromium.org/11726002/
> 
> Is there a reason to keep this open, or is it safe to close the CL?

I think you can close it.