Fixed remaining nits from Stefan
Fixed remaining nits from Stefan

Review URL: https://webrtc-codereview.appspot.com/1323007

Cr-Mirrored-From: https://chromium.googlesource.com/external/webrtc
Cr-Mirrored-Commit: 4e545b33b30d8ebf6f1e0809ae6bb3502babdbd5

sippet/webrtc,sippet/webrtc,sippet/webrtc,sippet/webrtc,sippet/webrtc,sippet/webrtc