Relaxed unnecessarily stringent thread checking in WebRtcAudioSendStream::OnData().
Relaxed unnecessarily stringent thread checking in WebRtcAudioSendStream::OnData().

BUG=webrtc:6345

Review-Url: https://codereview.webrtc.org/2332213006
Cr-Commit-Position: 972c6d2dc6dd5efdad1377c0d224e03eb8f276f7@{#14214}

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