Add common TLS extensions
Add common TLS extensions

Bug: webrtc:8019
Change-Id: Ic60e892f0acbe394472319c4d943690828446610
Reviewed-on: https://chromium-review.googlesource.com/580261
Commit-Queue: Emad Omara <9de251b7386bb492d18e925457a1500acf392415@webrtc.org>
Reviewed-by: Justin Uberti <e04621ffb33f68543e5a49e12b39cd657c40c0cf@webrtc.org>
Cr-Commit-Position: 972c6d2dc6dd5efdad1377c0d224e03eb8f276f7@{#19106}
TimothyGu/libilbc,TimothyGu/libilbc,ShiftMediaProject/libilbc,ShiftMediaProject/libilbc,ShiftMediaProject/libilbc,TimothyGu/libilbc,ShiftMediaProject/libilbc,ShiftMediaProject/libilbc,TimothyGu/libilbc,TimothyGu/libilbc