Register WebRTC-VP8-MaxFrameInterval.

Bug: webrtc:15530
Change-Id: I06da0515b04691f8dc69da0d4b1cb4bb1017c0cc
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/322602
Reviewed-by: Erik Språng <sprang@webrtc.org>
Commit-Queue: Mirko Bonadei <mbonadei@webrtc.org>
Cr-Commit-Position: refs/heads/main@{#40878}
diff --git a/experiments/field_trials.py b/experiments/field_trials.py
index f98abde..f621f6e 100755
--- a/experiments/field_trials.py
+++ b/experiments/field_trials.py
@@ -787,6 +787,9 @@
     FieldTrial('WebRTC-VP8-GetEncoderInfoOverride',
                'webrtc:11832',
                INDEFINITE),
+    FieldTrial('WebRTC-VP8-MaxFrameInterval',
+               'webrtc:15530',
+               date(2024, 4, 1)),
     FieldTrial('WebRTC-VP8-Postproc-Config',
                'webrtc:11551',
                date(2024, 4, 1)),