Add config to specify raw audio priority bitrate including overhead.

Bug: webrtc:10815
Change-Id: I6a498d6c6bcd4fe4ba6ccc4d6f407d686528d946
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/145333
Commit-Queue: Christoffer Rodbro <crodbro@webrtc.org>
Reviewed-by: Sebastian Jansson <srte@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#28590}
diff --git a/rtc_base/experiments/audio_allocation_settings.h b/rtc_base/experiments/audio_allocation_settings.h
index 6c655b8..8c5259b 100644
--- a/rtc_base/experiments/audio_allocation_settings.h
+++ b/rtc_base/experiments/audio_allocation_settings.h
@@ -90,6 +90,9 @@
   FieldTrialOptional<DataRate> min_bitrate_;
   FieldTrialOptional<DataRate> max_bitrate_;
   FieldTrialParameter<DataRate> priority_bitrate_;
+  // By default the priority_bitrate is compensated for packet overhead.
+  // Use this flag to configure a raw value instead.
+  FieldTrialOptional<DataRate> priority_bitrate_raw_;
   FieldTrialOptional<double> bitrate_priority_;
 };
 }  // namespace webrtc