Stop using deprecated PacedSender method from RtpTransportControllerSend.
Stop using deprecated PacedSender method from RtpTransportControllerSend.

The deprecated method will instantiate the alr detector member
that is not actually used later on.

Bug: webrtc:10108
Change-Id: I78ac8f286758078b5a9351578bea44a862e499c4
Reviewed-on: https://webrtc-review.googlesource.com/c/115180
Reviewed-by: Niels Moller <0057859e47d61d90529d0f66d9ef692cefedb46a@webrtc.org>
Commit-Queue: Sebastian Jansson <c24d1bc144eb7c11e553f59153fa17dba85ca83e@webrtc.org>
Cr-Commit-Position: 972c6d2dc6dd5efdad1377c0d224e03eb8f276f7@{#26068}
ShiftMediaProject/libilbc,TimothyGu/libilbc,ShiftMediaProject/libilbc,TimothyGu/libilbc,ShiftMediaProject/libilbc,TimothyGu/libilbc,TimothyGu/libilbc,ShiftMediaProject/libilbc,ShiftMediaProject/libilbc,TimothyGu/libilbc