This adds Cros API for calling the "Refresh" function on shill's

This adds Cros API for calling the "Refresh" function on shill's
IPConfig interface.

BUG=chromium-os:33223, chromium:129052
TEST=built and tested with another in-process CL that will use it.


Committed: http://src.chromium.org/viewvc/chrome?view=rev&revision=150921

[Greg Spencer (Chromium), 2012-08-09 20:28:32]

Steven, this adds support for Paul's new API that refreshes the IP config after
service properties are changed, allowing me to be able to set the static IP
properties and not have to reconnect the network manually.  I need it for a
following CL that will fix the static IP UI and which uses this.  (I'm sure
you'll get the pleasure of reviewing that too).

[stevenjb, 2012-08-09 20:45:50]

LGTM

http://codereview.chromium.org/10824242/diff/1001/chrome/browser/chromeos/cro...
File chrome/browser/chromeos/cros/network_library_impl_cros.cc (right):

http://codereview.chromium.org/10824242/diff/1001/chrome/browser/chromeos/cro...
chrome/browser/chromeos/cros/network_library_impl_cros.cc:466:
weak_ptr_factory_.GetWeakPtr()));
nit: alignment

[commit-bot: I haz the power, 2012-08-09 21:14:06]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/gspencer@chromium.org/10824242/26

[commit-bot: I haz the power, 2012-08-09 22:31:46]

Change committed as 150921