GitLab

similar to WebRTC.PeerConnection.SdpFormatReceived but counting answers.
WebRTC implementation CL:
  https://webrtc-review.googlesource.com/c/src/+/186701

BUG=chromium:857004

Change-Id: Ie09d8bb4a92a4509216351d111b0b3d7c8100e0f
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2460888
Commit-Queue: Philipp Hancke <philipp.hancke@googlemail.com>
Reviewed-by: Ilya Sherman <isherman@chromium.org>
Reviewed-by: Harald Alvestrand <hta@chromium.org>
Cr-Commit-Position: refs/heads/master@{#822119}