Reland "Add new field trial for controlling congestion window settings"

This is a reland of dd33d8ec7113ae7bee1511dc9f3f2d6336a7f083

Original change's description:
> Add new field trial for controlling congestion window settings
>
> Bug: None
> Change-Id: Idb7425e394db74a9dfb4f3764a58710497adff56
> Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/131127
> Reviewed-by: Magnus Flodman <mflodman@webrtc.org>
> Reviewed-by: Christoffer Rodbro <crodbro@webrtc.org>
> Commit-Queue: Evan Shrubsole <eshr@google.com>
> Cr-Commit-Position: refs/heads/master@{#27538}

TBR=mflodman@webrtc.org,crodbro@webrtc.org

Bug: None
Change-Id: Icee2efb90e219ef2c3384ad84498fd6938a98e56
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/132400
Reviewed-by: Mirko Bonadei <mbonadei@webrtc.org>
Reviewed-by: Magnus Flodman <mflodman@webrtc.org>
Commit-Queue: Mirko Bonadei <mbonadei@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#27550}
diff --git a/rtc_base/experiments/rate_control_settings_unittest.cc b/rtc_base/experiments/rate_control_settings_unittest.cc
index 0d8c376..0f23df0 100644
--- a/rtc_base/experiments/rate_control_settings_unittest.cc
+++ b/rtc_base/experiments/rate_control_settings_unittest.cc
@@ -23,7 +23,8 @@
   EXPECT_FALSE(
       RateControlSettings::ParseFromFieldTrials().UseCongestionWindow());
 
-  test::ScopedFieldTrials field_trials("WebRTC-VideoRateControl/cwnd:100/");
+  test::ScopedFieldTrials field_trials(
+      "WebRTC-CongestionWindow/QueueSize:100/");
   const RateControlSettings settings_after =
       RateControlSettings::ParseFromFieldTrials();
   EXPECT_TRUE(settings_after.UseCongestionWindow());
@@ -35,7 +36,7 @@
                    .UseCongestionWindowPushback());
 
   test::ScopedFieldTrials field_trials(
-      "WebRTC-VideoRateControl/cwnd:100,cwnd_pushback:100000/");
+      "WebRTC-CongestionWindow/QueueSize:100,MinBitrate:100000/");
   const RateControlSettings settings_after =
       RateControlSettings::ParseFromFieldTrials();
   EXPECT_TRUE(settings_after.UseCongestionWindowPushback());