PayloadRouter::OnEncodedImage() was casing boolean result from
SendOutgoingData() to int, and then not handling it correctly, which
results in all errors in SendOutgoingData() being ignored. This issue
was introduced in
https://chromium.googlesource.com/external/webrtc/+/ad34dbe934
This bug masked another issue with VP9 codec (see
crbug.com/webrtc/6723 ) and that increased number of dropped frames.
BUG=634816
Review-Url: https://codereview.webrtc.org/2512543002
Cr-Commit-Position: refs/heads/master@{#15143}