sergeyu 6dbbd89f18 Fix BitrateProber to match the requested bitrate more precisely
Previously BirateProber was calculating delay between probes based on
the size of the previous probe. Because of that the actual sent bitrate
can deviate greatly from the target value. With this change it uses
total number of bytes in the cluster to estimate delay before each
probe.

BUG=webrtc:6952

Review-Url: https://codereview.webrtc.org/2613543003
Cr-Original-Commit-Position: refs/heads/master@{#15971}
Committed: 599c5011e7
Review-Url: https://codereview.webrtc.org/2613543003
Cr-Commit-Position: refs/heads/master@{#16127}
2017-01-17 23:07:59 +00:00
..
2016-11-16 19:11:38 +00:00