Observe devices in NetworkStateHandler

Observe devices in NetworkStateHandler

This includes a bit of cleanup to NetworkStateHandler and ShillPropertyHandler.

I made ShillServicePropertyObserver support devices, renamed it 
ShillPropertyObserver, and moved it into ShillPropertyHandler since:
 a) naming it would be challenging without context
 b) It doesn't really do much, so if we want something similar (e.g. in NetworkConfigurationHandler) it will be easier just to copy/paste the code we need

BUG=161869
Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=181254

[stevenjb, 2013-02-06 21:07:55]

Some cleanup work, mostly to support monitoring Device.Scanning in
NetworkStateHandler.

[Greg Spencer (Chromium), 2013-02-06 22:21:34]

LGTM.  FYI: I am using that list argument when the network list changes, so
you'll probably have to fix that when you merge my change (currently in CQ).

[stevenjb (google-dont-use), 2013-02-06 23:23:22]

Ah, thanks for the heads-up. Will do. (I removed it because I realized it
wasn't always getting used right away, so it didn't make sense to add the
overhead of gathering it or passing it around when it can just be requested
when needed).



On Wed, Feb 6, 2013 at 2:21 PM, <[email protected]> wrote:

> LGTM.  FYI: I am using that list argument when the network list changes, so
> you'll probably have to fix that when you merge my change (currently in
> CQ).
>
>
https://codereview.chromium.**org/12211051/<https://codereview.chromium.org/1...
>

[stevenjb, 2013-02-07 04:21:17]

He Greg, I'm putting this in the CQ, because I'd love to have it in before the
weekend (I have one more dependent CL I'd like to get in first thing Monday), so
you may have to rebase crbug.com/168713 which got reverted.

[commit-bot: I haz the power, 2013-02-07 04:21:19]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/[email protected]/12211051/13001

[commit-bot: I haz the power, 2013-02-07 08:14:47]

Change committed as 181254

[Vitaly Buka (NO REVIEWS), 2013-02-07 08:47:57]

On 2013/02/07 08:14:47, I haz the power (commit-bot) wrote:
> Change committed as 181254

FYI, We reverted Greg's change today. Then I tried to fix and reapply that
again, but your change was landed just before that one. So I had to revert
again.

https://src.chromium.org/viewvc/chrome?view=rev&revision=181257

[stevenjb (google-dont-use), 2013-02-07 15:48:06]

Ugh, sorry, didn't anticipate that. Thanks for the effort.

-Steven



On Thu, Feb 7, 2013 at 12:47 AM, <[email protected]> wrote:

> On 2013/02/07 08:14:47, I haz the power (commit-bot) wrote:
>
>> Change committed as 181254
>>
>
> FYI, We reverted Greg's change today. Then I tried to fix and reapply that
> again, but your change was landed just before that one. So I had to revert
> again.
>
>
https://src.chromium.org/**viewvc/chrome?view=rev&**revision=181257<https://s...
>
>
https://chromiumcodereview.**appspot.com/12211051/<https://chromiumcodereview...
>