WebRTC gains a lot more than just being available on Chrome and on Android. These two open projects mean that WebRTC gets adopted in many non obvious places. Call it the unintended consequences of having Google bring WebRTC to life.
Google just announced their intent to make QUIC an IEFT standard. QUIC also has a role to play in WebRTC by replacing SCTP. QUIC brings with it faster connection times as well as better congestion algorithms.