Revert 272379 "Revert 272371 "Add UMA Counts for number of IPv4 ..."

Revert 272379 "Revert 272371 "Add UMA Counts for number of IPv4 ..."

Build failure may have been unrelated to this change.

> Revert 272371 "Add UMA Counts for number of IPv4 and IPv6 interf..."
> 
> Reason: build failure on Mac ASan 64
> 
> > Add UMA Counts for number of IPv4 and IPv6 interfaces detected for PeerConnection.
> > 
> > R=sergeyu@chromium.org
> > BUG=N/A
> > 
> > Review URL: https://codereview.chromium.org/299103002
> 
> TBR=mallinath@chromium.org
> 
> Review URL: https://codereview.chromium.org/299843008

TBR=mallinath@chromium.org

[Michael Courage, 2014-05-23 18:27:05]

On 2014/05/23 17:12:44, Michael Courage wrote:

Rebased version at https://codereview.chromium.org/296903010/ landed