Don't round the computed time deltas to nearest ms.

Resolving https://bugs.chromium.org/p/webrtc/issues/detail?id=14023

At the moment, in DelayBasedBwe the time deltas are rounded to the
nearest millisecond. This change makes sure the numbers are passed as
doubles as expected by the TrendlineEstimator.

Change-Id: I68882547fb19af0e67e7b5d8de4159083a54d7eb
Bug: webrtc:14023
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/261320
Reviewed-by: Per Kjellander <perkj@webrtc.org>
Commit-Queue: Per Kjellander <perkj@webrtc.org>
Cr-Commit-Position: refs/heads/main@{#36806}
diff --git a/AUTHORS b/AUTHORS
index 3e3ece4..393c1e1 100644
--- a/AUTHORS
+++ b/AUTHORS
@@ -44,6 +44,7 @@
 Dmitry Lizin <sdkdimon@gmail.com>
 Eike Rathke <erathke@redhat.com>
 Eric Rescorla, RTFM Inc. <ekr@rtfm.com>
+Filip Hlasek <filip@orcamobility.ai>
 Frederik Riedel, Frogg GmbH <frederik.riedel@frogg.io>
 Giji Gangadharan <giji.g@samsung.com>
 Graham Yoakum <gyoakum@skobalt.com>