Implementing unified plan encoding of msid.
Meaning "a=msid:...", instead of "a=ssrc:X msid:...".
An additional option to SdpSerialize determines if the
"a=msid" attribute is used.
Review URL: https://codereview.webrtc.org/1688383002
Cr-Commit-Position: refs/heads/master@{#11644}
diff --git a/webrtc/api/webrtcsdp.h b/webrtc/api/webrtcsdp.h
index 5997fa1..2b22b62 100644
--- a/webrtc/api/webrtcsdp.h
+++ b/webrtc/api/webrtcsdp.h
@@ -33,8 +33,10 @@
// Serialize SessionDescription including candidates if
// JsepSessionDescription has candidates.
// jdesc - The JsepSessionDescription object to be serialized.
+// unified_plan_sdp - If set to true, include "a=msid" lines where appropriate.
// return - SDP string serialized from the arguments.
-std::string SdpSerialize(const JsepSessionDescription& jdesc);
+std::string SdpSerialize(const JsepSessionDescription& jdesc,
+ bool unified_plan_sdp);
// Serializes the passed in IceCandidateInterface to a SDP string.
// candidate - The candidate to be serialized.