tree ed58dc1fb26933634c32f9c2943ffb036d5a44f3
parent 23db26fdfa70b4e1bbccee34fcef51d2bc70f52d
author Hall Liu <hallliu@google.com> 1527802990 -0700
committer Hall Liu <hallliu@google.com> 1527802990 -0700

Don't send RTT upgrade request if already RTT

If startRtt is called when the call is already an RTT call, pass down
the pipes instead of sending a new RTT request.

Bug: 80257914
Test: manual
Change-Id: I7e4f4ffea57b11156deb8765449ab2d1ca310b81