RFC 3984 sprop-parameter-sets SDP unit test
RFC 3984 sprop-parameter-sets SDP unit test

BUG=webrtc:5948

Review-Url: https://codereview.webrtc.org/2023913002
Cr-Commit-Position: 972c6d2dc6dd5efdad1377c0d224e03eb8f276f7@{#13026}

TimothyGu/libilbc,ShiftMediaProject/libilbc,ShiftMediaProject/libilbc,ShiftMediaProject/libilbc,TimothyGu/libilbc,TimothyGu/libilbc,ShiftMediaProject/libilbc,ShiftMediaProject/libilbc,TimothyGu/libilbc,TimothyGu/libilbc