Fix issue with deprecated CongestionController interface not working.

BUG=b/33446014

Review-Url: https://codereview.webrtc.org/2565503002
Cr-Original-Commit-Position: refs/heads/master@{#15491}
Cr-Mirrored-From: https://chromium.googlesource.com/external/webrtc
Cr-Mirrored-Commit: 7aa9b910ff0bc97fd9f2f1bf296ed8e4554862a2
1 file changed