Use network counting from webrtc for UMA.

Use network counting from webrtc for UMA.

Chrome passes each IP address in its own Network object. These IPv4Interfaces and IPv6Interfaces are really counting the number of IP addresses, not interfaces. To make these UMA accurate, a new stats struct is returned from WebRTC's MergeNetworkList which should control the grouping policy of IP addresses into network.

BUG=413437
Committed: https://crrev.com/2b116774d45296e8ad76725bd762873a56760e5b
Cr-Commit-Position: refs/heads/master@{#315409}

[guoweis_left_chromium, 2015-02-06 21:48:39]

guoweis@chromium.org changed reviewers:
+ sergeyu@chromium.org

[guoweis_left_chromium, 2015-02-06 21:48:50]

PTAL.

[guoweis_left_chromium, 2015-02-09 18:40:28]

On 2015/02/06 21:48:50, guoweis_chromium wrote:
> PTAL.

Ping.

[Sergey Ulanov, 2015-02-09 19:23:59]

lgtm

https://codereview.chromium.org/905663002/diff/1/content/renderer/p2p/ipc_net...
File content/renderer/p2p/ipc_network_manager.cc (right):

https://codereview.chromium.org/905663002/diff/1/content/renderer/p2p/ipc_net...
content/renderer/p2p/ipc_network_manager.cc:126: if (changed) {
remove {} here or add them in lines 71-72, to make single-line ifs consistent in
this file.

[guoweis_left_chromium, 2015-02-09 20:43:41]

New patchsets have been uploaded after l-g-t-m from sergeyu@chromium.org

[guoweis_left_chromium, 2015-02-09 20:44:23]

On 2015/02/09 19:23:59, Sergey Ulanov wrote:
> lgtm
> 
>
https://codereview.chromium.org/905663002/diff/1/content/renderer/p2p/ipc_net...
> File content/renderer/p2p/ipc_network_manager.cc (right):
> 
>
https://codereview.chromium.org/905663002/diff/1/content/renderer/p2p/ipc_net...
> content/renderer/p2p/ipc_network_manager.cc:126: if (changed) {
> remove {} here or add them in lines 71-72, to make single-line ifs consistent
in
> this file.

Done. Removed. Landing now.

[guoweis_left_chromium, 2015-02-09 20:44:38]

The CQ bit was checked by guoweis@chromium.org

[commit-bot: I haz the power, 2015-02-09 20:45:40]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/905663002/20001

[commit-bot: I haz the power, 2015-02-09 22:27:14]

Committed patchset #2 (id:20001)

[commit-bot: I haz the power, 2015-02-09 22:27:44]

Patchset 2 (id:??) landed as
https://crrev.com/2b116774d45296e8ad76725bd762873a56760e5b
Cr-Commit-Position: refs/heads/master@{#315409}