Remove GICE (again).

R=guoweis@webrtc.org

Review URL: https://codereview.webrtc.org/1353713002 .

Cr-Original-Commit-Position: refs/heads/master@{#9979}
Cr-Mirrored-From: https://chromium.googlesource.com/external/webrtc
Cr-Mirrored-Commit: 7cbd188c5ed7df80bb737bd4ada94422730e2d89
31 files changed