Fixed a miscalculation of sent bitrate caused by mixup of time units

Bug: webrtc:7949
Change-Id: Ia57fdd3d1de0952b80e77c30b0a6cfe44515eff2
Reviewed-on: https://chromium-review.googlesource.com/561460
Reviewed-by: Stefan Holmer <stefan@webrtc.org>
Commit-Queue: Sebastian Jansson <srte@webrtc.org>
Cr-Original-Commit-Position: refs/heads/master@{#18917}
Cr-Mirrored-From: https://chromium.googlesource.com/external/webrtc
Cr-Mirrored-Commit: 9e3f1e4ca24d9c7a98f390bd45d23d2011dee956
2 files changed