tree 87c8cb9fc1021fdb2f107b92e5a087fc91cac173
parent 264f287c9495a8e34ea0e28fee0f74d1fdcb6bc8
author wangqi <wangqi@google.com> 1521242215 -0700
committer Copybara-Service <copybara-piper@google.com> 1521247150 -0700

Use single return to break bubble of RTT chat.

Also change "done" button to "send" in input box and disallow multiple line since return will be interpreted as "send".

Bug: 67596257
Test: manual
PiperOrigin-RevId: 189409725
Change-Id: I3d3bf3e11cd04d6689125399f4567e88ee3f28f0