On client address changes, only migrate QUIC connections when client address changes are considered…

On client address changes, only migrate QUIC connections when client address changes are considered to be caused by NATs.

Add an enum PeerAddressChangeType. On each peer address change, the
change type is determined before the connection migration.

Merge internal change: 106444524

[email protected]
BUG=

[Ryan Hamilton, 2015-11-02 23:50:53]

Description was changed from

==========
On client address changes, only migrate QUIC connections when client address
changes are considered to be caused by NATs.

Add an enum PeerAddressChangeType. On each peer address change, the
change type is determined before the connection migration.

Merge internal change: 106444524

[email protected]
BUG=
==========

to

==========
On client address changes, only migrate QUIC connections when client address
changes are considered to be caused by NATs.

Add an enum PeerAddressChangeType. On each peer address change, the
change type is determined before the connection migration.

Merge internal change: 106444524

[email protected]
BUG=
==========

[Ryan Hamilton, 2015-11-02 23:50:53]

[email protected] changed reviewers:
+ [email protected]
- [email protected]

[ramant (doing other things), 2015-11-03 00:34:05]

lgtm