zhihuang c7953fa716 Remove the IceTransportInternal2.
Introduing IceTransportInternal2 is a temporary fix to switch the base
class of P2PTransportChannel to IceTransportInternal without breaking
Chromium. It is removed in this CL.

Reland this CL after Chromium doesn't depend on this.

BUG=webrtc:6951

Review-Url: https://codereview.webrtc.org/2632563002
Cr-Commit-Position: refs/heads/master@{#16131}
2017-01-18 03:40:19 +00:00
..
2017-01-18 03:40:19 +00:00
2017-01-05 20:21:52 +00:00
2016-11-16 19:11:38 +00:00