Peter Boström 9c01725e37 Simplify registration of RTP-header extensions.
Removes per-extension functions in ViEChannel/ViEReceiver and instead
register extensions directly on the RTP module by mapping extension
string to RTP-header-extension type.

BUG=webrtc:5494
R=danilchap@webrtc.org, stefan@webrtc.org

Review URL: https://codereview.webrtc.org/1740133002 .

Cr-Commit-Position: refs/heads/master@{#11786}
2016-02-26 15:26:29 +00:00
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2016-02-26 14:40:47 +00:00