Adding upstream version 124.0.1.upstream/124.0.1

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 1087 insertions, 0 deletions

diff --git a/third_party/libwebrtc/experiments/field_trials.py b/third_party/libwebrtc/experiments/field_trials.py
new file mode 100755
index 0000000000..e39b53eb47
--- /dev/null
+++ b/third_party/libwebrtc/experiments/field_trials.py
@@ -0,0 +1,1087 @@
+#!/usr/bin/env vpython3
+
+# Copyright (c) 2022 The WebRTC Project Authors. All Rights Reserved.
+#
+# Use of this source code is governed by a BSD-style license
+# that can be found in the LICENSE file in the root of the source
+# tree. An additional intellectual property rights grant can be found
+# in the file PATENTS.  All contributing project authors may
+# be found in the AUTHORS file in the root of the source tree.
+
+import datetime
+from datetime import date
+import sys
+from typing import FrozenSet, List, Set
+
+import argparse
+import dataclasses
+
+
+@dataclasses.dataclass(frozen=True)
+class FieldTrial:
+    """Representation of all attributes associated with a field trial.
+
+    Attributes:
+      key: Field trial key.
+      bug: Associated open bug containing more context.
+      end_date: Date when the field trial expires and must be deleted.
+    """
+    key: str
+    bug: str
+    end_date: date
+
+
+# As per the policy in `g3doc/field-trials.md`, all field trials should be
+# registered in the container below.
+ACTIVE_FIELD_TRIALS: FrozenSet[FieldTrial] = frozenset([
+    # keep-sorted start
+    FieldTrial('WebRTC-Aec3DelayEstimatorDetectPreEcho',
+               'webrtc:14205',
+               date(2024, 4, 1)),
+    FieldTrial('WebRTC-Aec3PenalyzeHighDelaysInitialPhase',
+               'webrtc:14919',
+               date(2024, 4, 1)),
+    FieldTrial('WebRTC-Aec3PreEchoConfiguration',
+               'webrtc:14205',
+               date(2024, 4, 1)),
+    FieldTrial('WebRTC-Audio-GainController2',
+               'webrtc:7494',
+               date(2024, 4, 1)),
+    FieldTrial('WebRTC-Audio-OpusSetSignalVoiceWithDtx',
+               'webrtc:4559',
+               date(2024, 4, 1)),
+    FieldTrial('WebRTC-Av1-GetEncoderInfoOverride',
+               'webrtc:14931',
+               date(2024, 4, 1)),
+    FieldTrial('WebRTC-BurstyPacer',
+               'chromium:1354491',
+               date(2024, 4, 1)),
+    FieldTrial('WebRTC-Bwe-SubtractAdditionalBackoffTerm',
+               'webrtc:13402',
+               date(2024, 4, 1)),
+    FieldTrial('WebRTC-DisableRtxRateLimiter',
+               'webrtc:15184',
+               date(2024, 4, 1)),
+    FieldTrial('WebRTC-EncoderDataDumpDirectory',
+               'b/296242528',
+               date(2024, 4, 1)),
+    FieldTrial('WebRTC-IPv6NetworkResolutionFixes',
+               'webrtc:14334',
+               date(2024, 4, 1)),
+    FieldTrial('WebRTC-IncomingTimestampOnMarkerBitOnly',
+               'webrtc:14526',
+               date(2024, 4, 1)),
+    FieldTrial('WebRTC-IncreaseIceCandidatePriorityHostSrflx',
+               'webrtc:15020',
+               date(2024, 4, 1)),
+    FieldTrial('WebRTC-JitterEstimatorConfig',
+               'webrtc:14151',
+               date(2024, 4, 1)),
+    FieldTrial('WebRTC-LibaomAv1Encoder-DisableFrameDropping',
+               'webrtc:15225',
+               date(2024, 4, 1)),
+    FieldTrial('WebRTC-Pacer-FastRetransmissions',
+               'chromium:1354491',
+               date(2024, 4, 1)),
+    FieldTrial('WebRTC-Pacer-KeyframeFlushing',
+               'webrtc:11340',
+               date(2024, 4, 1)),
+    FieldTrial('WebRTC-PaddingMode-RecentLargePacket',
+               'webrtc:15201',
+               date(2024, 4, 1)),
+    FieldTrial('WebRTC-PermuteTlsClientHello',
+               'webrtc:15467',
+               date(2024, 7, 1)),
+    FieldTrial('WebRTC-PreventSsrcGroupsWithUnexpectedSize',
+               'chromium:1459124',
+               date(2024, 4, 1)),
+    FieldTrial('WebRTC-RtcEventLogEncodeDependencyDescriptor',
+               'webrtc:14975',
+               date(2024, 4, 1)),
+    FieldTrial('WebRTC-RtcEventLogEncodeNetEqSetMinimumDelayKillSwitch',
+               'webrtc:14763',
+               date(2024, 4, 1)),
+    FieldTrial('WebRTC-SCM-Timestamp',
+               'webrtc:5773',
+               date(2024, 4, 1)),
+    FieldTrial('WebRTC-SendPacketsOnWorkerThread',
+               'webrtc:14502',
+               date(2024, 4, 1)),
+    FieldTrial('WebRTC-Stats-RtxReceiveStats',
+               'webrtc:15096',
+               date(2024, 4, 1)),
+    FieldTrial('WebRTC-TaskQueue-ReplaceLibeventWithStdlib',
+               'webrtc:14389',
+               date(2024, 4, 1)),
+    FieldTrial('WebRTC-Video-EnableRetransmitAllLayers',
+               'webrtc:14959',
+               date(2024, 4, 1)),
+    FieldTrial('WebRTC-Video-EncoderFallbackSettings',
+               'webrtc:6634',
+               date(2024, 4, 1)),
+    FieldTrial('WebRTC-Video-RequestedResolutionOverrideOutputFormatRequest',
+               'webrtc:14451',
+               date(2024, 4, 1)),
+    FieldTrial('WebRTC-VideoEncoderSettings',
+               'chromium:1406331',
+               date(2024, 4, 1)),
+    # keep-sorted end
+])  # yapf: disable
+
+INDEFINITE = date(datetime.MAXYEAR, 1, 1)
+
+# These field trials precedes the policy in `g3doc/field-trials.md` and are
+# therefore not required to follow it. Do not add any new field trials here.
+POLICY_EXEMPT_FIELD_TRIALS: FrozenSet[FieldTrial] = frozenset([
+    # keep-sorted start
+    FieldTrial('UseTwccPlrForAna',
+               'webrtc:7058',
+               date(2024, 4, 1)),
+    FieldTrial('WebRTC-AddNetworkCostToVpn',
+               'webrtc:13097',
+               date(2024, 4, 1)),
+    FieldTrial('WebRTC-AddPacingToCongestionWindowPushback',
+               'webrtc:10171',
+               date(2024, 4, 1)),
+    FieldTrial('WebRTC-AdjustOpusBandwidth',
+               'webrtc:8522',
+               date(2024, 4, 1)),
+    FieldTrial('WebRTC-Aec3AecStateFullResetKillSwitch',
+               'webrtc:11475',
+               INDEFINITE),
+    FieldTrial('WebRTC-Aec3AecStateSubtractorAnalyzerResetKillSwitch',
+               'webrtc:11475',
+               INDEFINITE),
+    FieldTrial('WebRTC-Aec3AntiHowlingMinimizationKillSwitch',
+               'b/150764764',
+               INDEFINITE),
+    FieldTrial('WebRTC-Aec3ClampInstQualityToOneKillSwitch',
+               'webrtc:10913',
+               INDEFINITE),
+    FieldTrial('WebRTC-Aec3ClampInstQualityToZeroKillSwitch',
+               'webrtc:10913',
+               INDEFINITE),
+    FieldTrial('WebRTC-Aec3CoarseFilterResetHangoverKillSwitch',
+               'webrtc:12265',
+               date(2024, 4, 1)),
+    FieldTrial('WebRTC-Aec3ConservativeTailFreqResponse',
+               'webrtc:13173',
+               date(2024, 4, 1)),
+    FieldTrial('WebRTC-Aec3DeactivateInitialStateResetKillSwitch',
+               'webrtc:11475',
+               date(2024, 4, 1)),
+    FieldTrial('WebRTC-Aec3DelayEstimateSmoothingDelayFoundOverride',
+               'webrtc:12775',
+               date(2024, 4, 1)),
+    FieldTrial('WebRTC-Aec3DelayEstimateSmoothingOverride',
+               'webrtc:12775',
+               date(2024, 4, 1)),
+    FieldTrial('WebRTC-Aec3EchoSaturationDetectionKillSwitch',
+               'webrtc:11475',
+               INDEFINITE),
+    FieldTrial('WebRTC-Aec3EnforceCaptureDelayEstimationDownmixing',
+               'webrtc:11153',
+               INDEFINITE),
+    FieldTrial(
+        'WebRTC-Aec3EnforceCaptureDelayEstimationLeftRightPrioritization',
+        'webrtc:11153',
+        INDEFINITE),
+    FieldTrial('WebRTC-Aec3EnforceConservativeHfSuppression',
+               'webrtc:11985',
+               date(2024, 4, 1)),
+    FieldTrial('WebRTC-Aec3EnforceLowActiveRenderLimit',
+               'webrtc:11475',
+               INDEFINITE),
+    FieldTrial('WebRTC-Aec3EnforceMoreTransparentNearendSuppressorHfTuning',
+               'webrtc:11487',
+               INDEFINITE),
+    FieldTrial('WebRTC-Aec3EnforceMoreTransparentNearendSuppressorTuning',
+               'webrtc:11475',
+               INDEFINITE),
+    FieldTrial('WebRTC-Aec3EnforceMoreTransparentNormalSuppressorHfTuning',
+               'webrtc:11487',
+               INDEFINITE),
+    FieldTrial('WebRTC-Aec3EnforceMoreTransparentNormalSuppressorTuning',
+               'webrtc:11475',
+               INDEFINITE),
+    FieldTrial('WebRTC-Aec3EnforceRapidlyAdjustingNearendSuppressorTunings',
+               'webrtc:11475',
+               INDEFINITE),
+    FieldTrial('WebRTC-Aec3EnforceRapidlyAdjustingNormalSuppressorTunings',
+               'webrtc:11475',
+               INDEFINITE),
+    FieldTrial('WebRTC-Aec3EnforceRenderDelayEstimationDownmixing',
+               'webrtc:11153',
+               INDEFINITE),
+    FieldTrial('WebRTC-Aec3EnforceSlowlyAdjustingNearendSuppressorTunings',
+               'webrtc:11475',
+               INDEFINITE),
+    FieldTrial('WebRTC-Aec3EnforceSlowlyAdjustingNormalSuppressorTunings',
+               'webrtc:11475',
+               INDEFINITE),
+    FieldTrial('WebRTC-Aec3EnforceStationarityProperties',
+               'webrtc:11475',
+               INDEFINITE),
+    FieldTrial('WebRTC-Aec3EnforceStationarityPropertiesAtInit',
+               'webrtc:11475',
+               INDEFINITE),
+    FieldTrial('WebRTC-Aec3EnforceVeryLowActiveRenderLimit',
+               'webrtc:11475',
+               INDEFINITE),
+    FieldTrial('WebRTC-Aec3HighPassFilterEchoReference',
+               'webrtc:12265',
+               date(2024, 4, 1)),
+    FieldTrial('WebRTC-Aec3MinErleDuringOnsetsKillSwitch',
+               'webrtc:10341',
+               date(2024, 4, 1)),
+    FieldTrial('WebRTC-Aec3NonlinearModeReverbKillSwitch',
+               'webrtc:11985',
+               date(2024, 4, 1)),
+    FieldTrial('WebRTC-Aec3OnsetDetectionKillSwitch',
+               'webrtc:11475',
+               INDEFINITE),
+    FieldTrial(
+        'WebRTC-Aec3RenderDelayEstimationLeftRightPrioritizationKillSwitch',
+        'webrtc:11153',
+        date(2024, 4, 1)),
+    FieldTrial('WebRTC-Aec3SensitiveDominantNearendActivation',
+               'webrtc:11475',
+               INDEFINITE),
+    FieldTrial('WebRTC-Aec3SetupSpecificDefaultConfigDefaultsKillSwitch',
+               'webrtc:11151',
+               INDEFINITE),
+    FieldTrial('WebRTC-Aec3ShortHeadroomKillSwitch',
+               'webrtc:10341',
+               date(2024, 4, 1)),
+    FieldTrial('WebRTC-Aec3StereoContentDetectionKillSwitch',
+               'webrtc:14900',
+               INDEFINITE),
+    FieldTrial('WebRTC-Aec3SuppressorAntiHowlingGainOverride',
+               'webrtc:11487',
+               INDEFINITE),
+    FieldTrial('WebRTC-Aec3SuppressorDominantNearendEnrExitThresholdOverride',
+               'webrtc:11487',
+               INDEFINITE),
+    FieldTrial('WebRTC-Aec3SuppressorDominantNearendEnrThresholdOverride',
+               'webrtc:11487',
+               INDEFINITE),
+    FieldTrial('WebRTC-Aec3SuppressorDominantNearendHoldDurationOverride',
+               'webrtc:11487',
+               INDEFINITE),
+    FieldTrial('WebRTC-Aec3SuppressorDominantNearendSnrThresholdOverride',
+               'webrtc:11487',
+               INDEFINITE),
+    FieldTrial('WebRTC-Aec3SuppressorDominantNearendTriggerThresholdOverride',
+               'webrtc:11487',
+               INDEFINITE),
+    FieldTrial('WebRTC-Aec3SuppressorNearendHfMaskSuppressOverride',
+               'webrtc:11487',
+               INDEFINITE),
+    FieldTrial('WebRTC-Aec3SuppressorNearendHfMaskTransparentOverride',
+               'webrtc:11487',
+               INDEFINITE),
+    FieldTrial('WebRTC-Aec3SuppressorNearendLfMaskSuppressOverride',
+               'webrtc:11487',
+               INDEFINITE),
+    FieldTrial('WebRTC-Aec3SuppressorNearendLfMaskTransparentOverride',
+               'webrtc:11487',
+               date(2024, 4, 1)),
+    FieldTrial('WebRTC-Aec3SuppressorNearendMaxDecFactorLfOverride',
+               'webrtc:11487',
+               date(2024, 4, 1)),
+    FieldTrial('WebRTC-Aec3SuppressorNearendMaxIncFactorOverride',
+               'webrtc:11487',
+               date(2024, 4, 1)),
+    FieldTrial('WebRTC-Aec3SuppressorNormalHfMaskSuppressOverride',
+               'webrtc:11487',
+               date(2024, 4, 1)),
+    FieldTrial('WebRTC-Aec3SuppressorNormalHfMaskTransparentOverride',
+               'webrtc:11487',
+               date(2024, 4, 1)),
+    FieldTrial('WebRTC-Aec3SuppressorNormalLfMaskSuppressOverride',
+               'webrtc:11487',
+               date(2024, 4, 1)),
+    FieldTrial('WebRTC-Aec3SuppressorNormalLfMaskTransparentOverride',
+               'webrtc:11487',
+               date(2024, 4, 1)),
+    FieldTrial('WebRTC-Aec3SuppressorNormalMaxDecFactorLfOverride',
+               'webrtc:11487',
+               date(2024, 4, 1)),
+    FieldTrial('WebRTC-Aec3SuppressorNormalMaxIncFactorOverride',
+               'webrtc:11487',
+               date(2024, 4, 1)),
+    FieldTrial('WebRTC-Aec3SuppressorTuningOverride',
+               'webrtc:11487',
+               date(2024, 4, 1)),
+    FieldTrial('WebRTC-Aec3TransparentAntiHowlingGain',
+               'webrtc:11475',
+               date(2024, 4, 1)),
+    FieldTrial('WebRTC-Aec3TransparentModeHmm',
+               'webrtc:12265',
+               date(2024, 4, 1)),
+    FieldTrial('WebRTC-Aec3TransparentModeKillSwitch',
+               'webrtc:9256',
+               date(2024, 4, 1)),
+    FieldTrial('WebRTC-Aec3Use1Dot2SecondsInitialStateDuration',
+               'webrtc:11475',
+               date(2024, 4, 1)),
+    FieldTrial('WebRTC-Aec3Use1Dot6SecondsInitialStateDuration',
+               'webrtc:11475',
+               date(2024, 4, 1)),
+    FieldTrial('WebRTC-Aec3Use2Dot0SecondsInitialStateDuration',
+               'webrtc:11475',
+               date(2024, 4, 1)),
+    FieldTrial('WebRTC-Aec3UseDot1SecondsInitialStateDuration',
+               'webrtc:11475',
+               date(2024, 4, 1)),
+    FieldTrial('WebRTC-Aec3UseDot2SecondsInitialStateDuration',
+               'webrtc:11475',
+               date(2024, 4, 1)),
+    FieldTrial('WebRTC-Aec3UseDot3SecondsInitialStateDuration',
+               'webrtc:11475',
+               date(2024, 4, 1)),
+    FieldTrial('WebRTC-Aec3UseDot6SecondsInitialStateDuration',
+               'webrtc:11475',
+               date(2024, 4, 1)),
+    FieldTrial('WebRTC-Aec3UseDot9SecondsInitialStateDuration',
+               'webrtc:11475',
+               date(2024, 4, 1)),
+    FieldTrial('WebRTC-Aec3UseErleOnsetCompensationInDominantNearend',
+               'webrtc:12686',
+               date(2024, 4, 1)),
+    FieldTrial('WebRTC-Aec3UseLowEarlyReflectionsDefaultGain',
+               'webrtc:11475',
+               date(2024, 4, 1)),
+    FieldTrial('WebRTC-Aec3UseLowLateReflectionsDefaultGain',
+               'webrtc:11475',
+               date(2024, 4, 1)),
+    FieldTrial('WebRTC-Aec3UseNearendReverbLen',
+               'webrtc:13143',
+               INDEFINITE),
+    FieldTrial('WebRTC-Aec3UseShortConfigChangeDuration',
+               'webrtc:11475',
+               date(2024, 4, 1)),
+    FieldTrial('WebRTC-Aec3UseZeroInitialStateDuration',
+               'webrtc:11475',
+               date(2024, 4, 1)),
+    FieldTrial('WebRTC-Aec3VerySensitiveDominantNearendActivation',
+               'webrtc:11475',
+               date(2024, 4, 1)),
+    FieldTrial('WebRTC-Agc2SimdAvx2KillSwitch',
+               'webrtc:7494',
+               date(2024, 4, 1)),
+    FieldTrial('WebRTC-Agc2SimdNeonKillSwitch',
+               'webrtc:7494',
+               date(2024, 4, 1)),
+    FieldTrial('WebRTC-Agc2SimdSse2KillSwitch',
+               'webrtc:7494',
+               date(2024, 4, 1)),
+    FieldTrial('WebRTC-AllowMACBasedIPv6',
+               'webrtc:12268',
+               date(2024, 4, 1)),
+    FieldTrial('WebRTC-AlrDetectorParameters',
+               'webrtc:10542',
+               INDEFINITE),
+    FieldTrial('WebRTC-AndroidNetworkMonitor-IsAdapterAvailable',
+               'webrtc:13741',
+               date(2024, 4, 1)),
+    FieldTrial('WebRTC-ApmExperimentalMultiChannelCaptureKillSwitch',
+               'webrtc:14901',
+               INDEFINITE),
+    FieldTrial('WebRTC-ApmExperimentalMultiChannelRenderKillSwitch',
+               'webrtc:14902',
+               INDEFINITE),
+    FieldTrial('WebRTC-Audio-2ndAgcMinMicLevelExperiment',
+               'chromium:1275566',
+               date(2024, 4, 1)),
+    FieldTrial('WebRTC-Audio-ABWENoTWCC',
+               'webrtc:8243',
+               INDEFINITE),
+    FieldTrial('WebRTC-Audio-AdaptivePtime',
+               'chromium:1086942',
+               date(2024, 4, 1)),
+    FieldTrial('WebRTC-Audio-Allocation',
+               'webrtc:10286',
+               INDEFINITE),
+    FieldTrial('WebRTC-Audio-AlrProbing',
+               'webrtc:10200',
+               date(2024, 4, 1)),
+    FieldTrial('WebRTC-Audio-FecAdaptation',
+               'webrtc:8127',
+               date(2024, 4, 1)),
+    FieldTrial('WebRTC-Audio-LegacyOverhead',
+               'webrtc:11001',
+               INDEFINITE),
+    FieldTrial('WebRTC-Audio-MinimizeResamplingOnMobile',
+               'webrtc:6181',
+               date(2024, 4, 1)),
+    FieldTrial('WebRTC-Audio-NetEqDecisionLogicConfig',
+               'webrtc:13322',
+               date(2024, 4, 1)),
+    FieldTrial('WebRTC-Audio-NetEqDelayManagerConfig',
+               'webrtc:10333',
+               date(2024, 4, 1)),
+    FieldTrial('WebRTC-Audio-NetEqNackTrackerConfig',
+               'webrtc:10178',
+               date(2024, 4, 1)),
+    FieldTrial('WebRTC-Audio-NetEqSmartFlushing',
+               'webrtc:12201',
+               date(2024, 4, 1)),
+    FieldTrial('WebRTC-Audio-OpusAvoidNoisePumpingDuringDtx',
+               'webrtc:12380',
+               date(2024, 4, 1)),
+    FieldTrial('WebRTC-Audio-OpusBitrateMultipliers',
+               'webrtc:11055',
+               date(2024, 4, 1)),
+    FieldTrial('WebRTC-Audio-OpusPlcUsePrevDecodedSamples',
+               'b/143582588',
+               date(2024, 4, 1)),
+    FieldTrial('WebRTC-Audio-Red-For-Opus',
+               'webrtc:11640',
+               date(2024, 4, 1)),
+    FieldTrial('WebRTC-Audio-StableTargetAdaptation',
+               'webrtc:10981',
+               INDEFINITE),
+    FieldTrial('WebRTC-Audio-iOS-Holding',
+               'webrtc:8126',
+               date(2024, 4, 1)),
+    FieldTrial('WebRTC-AudioDevicePlayoutBufferSizeFactor',
+               'webrtc:10928',
+               date(2024, 4, 1)),
+    FieldTrial('WebRTC-AutomaticAnimationDetectionScreenshare',
+               'webrtc:11058',
+               date(2024, 4, 1)),
+    FieldTrial('WebRTC-Avx2SupportKillSwitch',
+               'webrtc:11663',
+               date(2024, 4, 1)),
+    FieldTrial('WebRTC-BindUsingInterfaceName',
+               'webrtc:10707',
+               date(2024, 4, 1)),
+    FieldTrial('WebRTC-BoostedScreenshareQp',
+               'webrtc:9659',
+               date(2024, 4, 1)),
+    FieldTrial('WebRTC-Bwe-AllocationProbing',
+               'webrtc:10394',
+               date(2024, 4, 1)),
+    FieldTrial('WebRTC-Bwe-AlrProbing',
+               'webrtc:10394',
+               date(2024, 4, 1)),
+    FieldTrial('WebRTC-Bwe-EstimateBoundedIncrease',
+               'webrtc:10498',
+               date(2024, 4, 1)),
+    FieldTrial('WebRTC-Bwe-ExponentialProbing',
+               'webrtc:10394',
+               date(2024, 4, 1)),
+    FieldTrial('WebRTC-Bwe-IgnoreProbesLowerThanNetworkStateEstimate',
+               'webrtc:10498',
+               date(2024, 4, 1)),
+    FieldTrial('WebRTC-Bwe-InitialProbing',
+               'webrtc:10394',
+               date(2024, 4, 1)),
+    FieldTrial('WebRTC-Bwe-InjectedCongestionController',
+               'webrtc:8415',
+               INDEFINITE),
+    FieldTrial('WebRTC-Bwe-LimitProbesLowerThanThroughputEstimate',
+               'webrtc:11498',
+               date(2024, 4, 1)),
+    FieldTrial('WebRTC-Bwe-LinkCapacity',
+               'webrtc:9718',
+               date(2024, 4, 1)),
+    FieldTrial('WebRTC-Bwe-LossBasedBweV2',
+               'webrtc:12707',
+               date(2024, 4, 1)),
+    FieldTrial('WebRTC-Bwe-LossBasedControl',
+               '',
+               date(2024, 4, 1)),
+    FieldTrial('WebRTC-Bwe-MaxRttLimit',
+               'webrtc:9718',
+               INDEFINITE),
+    FieldTrial('WebRTC-Bwe-MinAllocAsLowerBound',
+               '',
+               date(2024, 4, 1)),
+    FieldTrial('WebRTC-Bwe-NetworkRouteConstraints',
+               'webrtc:11434',
+               date(2024, 4, 1)),
+    FieldTrial('WebRTC-Bwe-NoFeedbackReset',
+               'webrtc:9718',
+               date(2024, 4, 1)),
+    FieldTrial('WebRTC-Bwe-PaceAtMaxOfBweAndLowerLinkCapacity',
+               '',
+               date(2024, 4, 1)),
+    FieldTrial('WebRTC-Bwe-ProbingBehavior',
+               'webrtc:10394',
+               date(2024, 4, 1)),
+    FieldTrial('WebRTC-Bwe-ProbingConfiguration',
+               'webrtc:10394',
+               date(2024, 4, 1)),
+    FieldTrial('WebRTC-Bwe-ReceiveTimeFix',
+               'webrtc:9054',
+               date(2024, 4, 1)),
+    FieldTrial('WebRTC-Bwe-ReceiverLimitCapsOnly',
+               'webrtc:12306',
+               date(2024, 4, 1)),
+    FieldTrial('WebRTC-Bwe-RobustThroughputEstimatorSettings',
+               'webrtc:10274',
+               date(2024, 4, 1)),
+    FieldTrial('WebRTC-Bwe-SafeResetOnRouteChange',
+               'webrtc:9718',
+               INDEFINITE),
+    FieldTrial('WebRTC-Bwe-SeparateAudioPackets',
+               'webrtc:10932',
+               date(2024, 4, 1)),
+    FieldTrial('WebRTC-Bwe-TrendlineEstimatorSettings',
+               'webrtc:10932',
+               date(2024, 4, 1)),
+    FieldTrial('WebRTC-BweBackOffFactor',
+               'webrtc:8212',
+               INDEFINITE),
+    FieldTrial('WebRTC-BweLossExperiment',
+               'webrtc:5839',
+               date(2024, 4, 1)),
+    FieldTrial('WebRTC-BweRapidRecoveryExperiment',
+               'webrtc:8015',
+               date(2024, 4, 1)),
+    FieldTrial('WebRTC-BweThroughputWindowConfig',
+               'webrtc:10274',
+               date(2024, 4, 1)),
+    FieldTrial('WebRTC-BweWindowSizeInPackets',
+               'webrtc:8212',
+               INDEFINITE),
+    FieldTrial('WebRTC-CongestionWindow',
+               'webrtc:14898',
+               INDEFINITE),
+    FieldTrial('WebRTC-CpuLoadEstimator',
+               'webrtc:8504',
+               date(2024, 4, 1)),
+    FieldTrial('WebRTC-Debugging-RtpDump',
+               'webrtc:10675',
+               INDEFINITE),
+    FieldTrial('WebRTC-DecoderDataDumpDirectory',
+               'webrtc:14236',
+               INDEFINITE),
+    FieldTrial('WebRTC-DefaultBitrateLimitsKillSwitch',
+               '',
+               date(2024, 4, 1)),
+    FieldTrial('WebRTC-DependencyDescriptorAdvertised',
+               'webrtc:10342',
+               date(2024, 4, 1)),
+    FieldTrial('WebRTC-DisablePacerEmergencyStop',
+               '',
+               date(2024, 4, 1)),
+    FieldTrial('WebRTC-DisableUlpFecExperiment',
+               '',
+               date(2024, 4, 1)),
+    FieldTrial('WebRTC-DontIncreaseDelayBasedBweInAlr',
+               'webrtc:10542',
+               date(2024, 4, 1)),
+    FieldTrial('WebRTC-DscpFieldTrial',
+               'webrtc:13622',
+               date(2024, 4, 1)),
+    FieldTrial('WebRTC-ExtraICEPing',
+               'webrtc:10273',
+               date(2024, 4, 1)),
+    FieldTrial('WebRTC-FakeNetworkReceiveConfig',
+               'webrtc:14238',
+               INDEFINITE),
+    FieldTrial('WebRTC-FakeNetworkSendConfig',
+               'webrtc:14238',
+               INDEFINITE),
+    FieldTrial('WebRTC-FilterAbsSendTimeExtension',
+               'webrtc:10234',
+               INDEFINITE),
+    FieldTrial('WebRTC-FindNetworkHandleWithoutIpv6TemporaryPart',
+               'webrtc:11067',
+               date(2024, 4, 1)),
+    FieldTrial('WebRTC-FlexFEC-03',
+               'webrtc:5654',
+               date(2024, 4, 1)),
+    FieldTrial('WebRTC-FlexFEC-03-Advertised',
+               'webrtc:5654',
+               date(2024, 4, 1)),
+    FieldTrial('WebRTC-ForcePlayoutDelay',
+               'webrtc:11896',
+               INDEFINITE),
+    FieldTrial('WebRTC-ForceSendPlayoutDelay',
+               'webrtc:11896',
+               INDEFINITE),
+    FieldTrial('WebRTC-ForceSimulatedOveruseIntervalMs',
+               'webrtc:14239',
+               INDEFINITE),
+    FieldTrial('WebRTC-FrameDropper',
+               'webrtc:9711',
+               INDEFINITE),
+    FieldTrial('WebRTC-FullBandHpfKillSwitch',
+               'webrtc:11193',
+               date(2024, 4, 1)),
+    FieldTrial('WebRTC-GenericCodecDependencyDescriptor',
+               'webrtc:14969',
+               INDEFINITE),
+    FieldTrial('WebRTC-GenericDescriptorAdvertised',
+               'webrtc:9361',
+               INDEFINITE),
+    FieldTrial('WebRTC-GenericDescriptorAuth',
+               'webrtc:10103',
+               INDEFINITE),
+    FieldTrial('WebRTC-GenericPictureId',
+               'webrtc:9361',
+               INDEFINITE),
+    FieldTrial('WebRTC-GetEncoderInfoOverride',
+               '',
+               date(2024, 4, 1)),
+    FieldTrial('WebRTC-H264HighProfile',
+               'webrtc:6337',
+               date(2024, 4, 1)),
+    FieldTrial('WebRTC-IPv6Default',
+               'chromium:413437',
+               date(2024, 4, 1)),
+    FieldTrial('WebRTC-IceControllerFieldTrials',
+               'chromium:1024965',
+               INDEFINITE),
+    FieldTrial('WebRTC-IceFieldTrials',
+               'webrtc:11021',
+               INDEFINITE),
+    FieldTrial('WebRTC-KeyframeInterval',
+               'webrtc:10427',
+               INDEFINITE),
+    FieldTrial('WebRTC-LegacyFrameIdJumpBehavior',
+               'webrtc:13343',
+               date(2024, 4, 1)),
+    FieldTrial('WebRTC-LegacySimulcastLayerLimit',
+               'webrtc:8785',
+               INDEFINITE),
+    FieldTrial('WebRTC-LegacyTlsProtocols',
+               'webrtc:10261',
+               date(2024, 4, 1)),
+    FieldTrial('WebRTC-LowresSimulcastBitrateInterpolation',
+               'webrtc:12415',
+               date(2024, 4, 1)),
+    FieldTrial('WebRTC-MutedStateKillSwitch',
+               'b/177830919',
+               date(2024, 4, 1)),
+    FieldTrial('WebRTC-Network-UseNWPathMonitor',
+               'webrtc:10966',
+               date(2024, 4, 1)),
+    FieldTrial('WebRTC-NetworkMonitorAutoDetect',
+               'webrtc:13741',
+               date(2024, 4, 1)),
+    FieldTrial('WebRTC-NormalizeSimulcastResolution',
+               '',
+               INDEFINITE),
+    FieldTrial('WebRTC-Pacer-BlockAudio',
+               'webrtc:8415',
+               INDEFINITE),
+    FieldTrial('WebRTC-Pacer-DrainQueue',
+               'webrtc:8415',
+               date(2024, 4, 1)),
+    FieldTrial('WebRTC-Pacer-IgnoreTransportOverhead',
+               'webrtc:9883',
+               INDEFINITE),
+    FieldTrial('WebRTC-Pacer-PadInSilence',
+               'webrtc:8415',
+               date(2024, 4, 1)),
+    FieldTrial('WebRTC-PacketBufferMaxSize',
+               'webrtc:9851',
+               INDEFINITE),
+    FieldTrial('WebRTC-PcFactoryDefaultBitrates',
+               'webrtc:10865',
+               date(2024, 4, 1)),
+    FieldTrial('WebRTC-PiggybackIceCheckAcknowledgement',
+               '',
+               date(2024, 4, 1)),
+    FieldTrial('WebRTC-PixelLimitResource',
+               'webrtc:12261',
+               INDEFINITE),
+    FieldTrial('WebRTC-ProbingScreenshareBwe',
+               'webrtc:7694',
+               date(2024, 4, 1)),
+    FieldTrial('WebRTC-ProtectionOverheadRateThreshold',
+               'webrtc:14899',
+               INDEFINITE),
+    FieldTrial('WebRTC-QpParsingKillSwitch',
+               'webrtc:12542',
+               date(2024, 4, 1)),
+    FieldTrial('WebRTC-RtcEventLogKillSwitch',
+               'webrtc:12084',
+               INDEFINITE),
+    FieldTrial('WebRTC-RtcEventLogNewFormat',
+               'webrtc:8111',
+               date(2024, 4, 1)),
+    FieldTrial('WebRTC-RtcpLossNotification',
+               'webrtc:10336',
+               date(2024, 4, 1)),
+    FieldTrial('WebRTC-RttMult',
+               'webrtc:9670',
+               INDEFINITE),
+    FieldTrial('WebRTC-SendBufferSizeBytes',
+               'webrtc:11905',
+               date(2024, 4, 1)),
+    FieldTrial('WebRTC-ReceiveBufferSize',
+               'webrtc:15585',
+               date(2024, 4, 1)),
+    FieldTrial('WebRTC-SendNackDelayMs',
+               'webrtc:9953',
+               date(2024, 4, 1)),
+    FieldTrial('WebRTC-SetSocketReceiveBuffer',
+               'webrtc:13753',
+               date(2024, 4, 1)),
+    FieldTrial('WebRTC-SignalNetworkPreferenceChange',
+               'webrtc:11825',
+               date(2024, 4, 1)),
+    FieldTrial('WebRTC-SimulcastEncoderAdapter-GetEncoderInfoOverride',
+               '',
+               date(2024, 4, 1)),
+    FieldTrial('WebRTC-SimulcastLayerLimitRoundUp',
+               '',
+               date(2024, 4, 1)),
+    FieldTrial('WebRTC-SpsPpsIdrIsH264Keyframe',
+               'webrtc:8423',
+               INDEFINITE),
+    FieldTrial('WebRTC-StableTargetRate',
+               'webrtc:10126',
+               date(2024, 4, 1)),
+    FieldTrial('WebRTC-StrictPacingAndProbing',
+               'webrtc:8072',
+               date(2024, 4, 1)),
+    FieldTrial('WebRTC-StunInterPacketDelay',
+               '',
+               date(2024, 4, 1)),
+    FieldTrial('WebRTC-SurfaceCellularTypes',
+               'webrtc:11473',
+               date(2024, 4, 1)),
+    FieldTrial('WebRTC-SwitchEncoderOnInitializationFailures',
+               'webrtc:13572',
+               date(2024, 4, 1)),
+    FieldTrial('WebRTC-Target-Bitrate-Rtcp',
+               'webrtc:9969',
+               INDEFINITE),
+    FieldTrial('WebRTC-TransientSuppressorForcedOff',
+               'chromium:1186705',
+               INDEFINITE),
+    FieldTrial('WebRTC-UseBaseHeavyVP8TL3RateAllocation',
+               'webrtc:9477',
+               date(2024, 4, 1)),
+    FieldTrial('WebRTC-UseDifferentiatedCellularCosts',
+               'webrtc:11473',
+               date(2024, 4, 1)),
+    FieldTrial('WebRTC-UseShortVP8TL2Pattern',
+               'webrtc:9477',
+               INDEFINITE),
+    FieldTrial('WebRTC-UseShortVP8TL3Pattern',
+               'webrtc:8162',
+               INDEFINITE),
+    FieldTrial('WebRTC-UseStandardBytesStats',
+               'webrtc:10525',
+               date(2024, 4, 1)),
+    FieldTrial('WebRTC-UseTurnServerAsStunServer',
+               'webrtc:11059',
+               date(2024, 4, 1)),
+    FieldTrial('WebRTC-VP8-CpuSpeed-Arm',
+               '',
+               date(2024, 4, 1)),
+    FieldTrial('WebRTC-VP8-ForcePartitionResilience',
+               'webrtc:11832',
+               INDEFINITE),
+    FieldTrial('WebRTC-VP8-Forced-Fallback-Encoder-v2',
+               'webrtc:6634',
+               INDEFINITE),
+    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)),
+    FieldTrial('WebRTC-VP8-Postproc-Config-Arm',
+               'webrtc:6634',
+               INDEFINITE),
+    FieldTrial('WebRTC-VP8ConferenceTemporalLayers',
+               'webrtc:9260',
+               INDEFINITE),
+    FieldTrial('WebRTC-VP8IosMaxNumberOfThread',
+               'webrtc:10005',
+               date(2024, 4, 1)),
+    FieldTrial('WebRTC-VP8VariableFramerateScreenshare',
+               'webrtc:10310',
+               date(2024, 4, 1)),
+    FieldTrial('WebRTC-VP9-GetEncoderInfoOverride',
+               '',
+               date(2024, 4, 1)),
+    FieldTrial('WebRTC-VP9-LowTierOptimizations',
+               'webrtc:13888',
+               date(2024, 4, 1)),
+    FieldTrial('WebRTC-VP9-PerformanceFlags',
+               'webrtc:11551',
+               date(2024, 4, 1)),
+    FieldTrial('WebRTC-VP9QualityScaler',
+               'webrtc:11319',
+               date(2024, 4, 1)),
+    FieldTrial('WebRTC-VP9VariableFramerateScreenshare',
+               'webrtc:10310',
+               date(2024, 4, 1)),
+    FieldTrial('WebRTC-Video-BalancedDegradation',
+               'webrtc:7607',
+               INDEFINITE),
+    FieldTrial('WebRTC-Video-BalancedDegradationSettings',
+               '',
+               INDEFINITE),
+    FieldTrial('WebRTC-Video-BandwidthQualityScalerSettings',
+               'webrtc:12942',
+               INDEFINITE),
+    FieldTrial('WebRTC-Video-DisableAutomaticResize',
+               'webrtc:11812',
+               date(2024, 4, 1)),
+    FieldTrial('WebRTC-Video-DiscardPacketsWithUnknownSsrc',
+               'webrtc:9871',
+               INDEFINITE),
+    FieldTrial('WebRTC-Video-ForcedSwDecoderFallback',
+               '',
+               INDEFINITE),
+    FieldTrial('WebRTC-Video-InitialDecoderResolution',
+               'webrtc:11898',
+               date(2024, 4, 1)),
+    FieldTrial('WebRTC-Video-MinVideoBitrate',
+               'webrtc:10915',
+               date(2024, 4, 1)),
+    FieldTrial('WebRTC-Video-Pacing',
+               'webrtc:10038',
+               date(2024, 4, 1)),
+    FieldTrial('WebRTC-Video-PreferTemporalSupportOnBaseLayer',
+               'webrtc:11324',
+               INDEFINITE),
+    FieldTrial('WebRTC-Video-QualityRampupSettings',
+               '',
+               date(2024, 4, 1)),
+    FieldTrial('WebRTC-Video-QualityScalerSettings',
+               '',
+               INDEFINITE),
+    FieldTrial('WebRTC-Video-QualityScaling',
+               'webrtc:9169',
+               INDEFINITE),
+    FieldTrial('WebRTC-Video-UseFrameRateForOverhead',
+               'b/166341943',
+               date(2024, 4, 1)),
+    FieldTrial('WebRTC-Video-VariableStartScaleFactor',
+               '',
+               date(2024, 4, 1)),
+    FieldTrial('WebRTC-VideoFrameTrackingIdAdvertised',
+               'webrtc:12594',
+               INDEFINITE),
+    FieldTrial('WebRTC-VideoLayersAllocationAdvertised',
+               'webrtc:1200',
+               INDEFINITE),
+    FieldTrial('WebRTC-VideoRateControl',
+               'webrtc:10223',
+               INDEFINITE),
+    FieldTrial('WebRTC-VoIPChannelRemixingAdjustmentKillSwitch',
+               'chromium:1027117',
+               date(2024, 4, 1)),
+    FieldTrial('WebRTC-Vp9ExternalRefCtrl',
+               'webrtc:9585',
+               date(2024, 4, 1)),
+    FieldTrial('WebRTC-Vp9InterLayerPred',
+               'chromium:949536',
+               INDEFINITE),
+    FieldTrial('WebRTC-Vp9IssueKeyFrameOnLayerDeactivation',
+               'chromium:889017',
+               date(2024, 4, 1)),
+    FieldTrial('WebRTC-ZeroHertzScreenshare',
+               'chromium:1255737',
+               date(2024, 4, 1)),
+    FieldTrial('WebRTC-ZeroPlayoutDelay',
+               'chromium:1335323',
+               date(2024, 4, 1)),
+    # keep-sorted end
+])  # yapf: disable
+
+REGISTERED_FIELD_TRIALS: FrozenSet[FieldTrial] = ACTIVE_FIELD_TRIALS.union(
+    POLICY_EXEMPT_FIELD_TRIALS)
+
+
+def todays_date() -> date:
+    now = datetime.datetime.now(datetime.timezone.utc)
+    return date(now.year, now.month, now.day)
+
+
+def registry_header(
+        field_trials: FrozenSet[FieldTrial] = REGISTERED_FIELD_TRIALS) -> str:
+    """Generates a C++ header with all field trial keys.
+
+    Args:
+      field_trials: Field trials to include in the header.
+
+    Returns:
+      String representation of a C++ header file containing all field trial
+      keys.
+
+    >>> trials = {
+    ...     FieldTrial('B', '', date(1, 1, 1)),
+    ...     FieldTrial('A', '', date(1, 1, 1)),
+    ...     FieldTrial('B', '', date(2, 2, 2)),
+    ... }
+    >>> print(registry_header(trials))
+    // This file was automatically generated. Do not edit.
+    <BLANKLINE>
+    #ifndef GEN_REGISTERED_FIELD_TRIALS_H_
+    #define GEN_REGISTERED_FIELD_TRIALS_H_
+    <BLANKLINE>
+    #include "absl/strings/string_view.h"
+    <BLANKLINE>
+    namespace webrtc {
+    <BLANKLINE>
+    inline constexpr absl::string_view kRegisteredFieldTrials[] = {
+        "A",
+        "B",
+    };
+    <BLANKLINE>
+    }  // namespace webrtc
+    <BLANKLINE>
+    #endif  // GEN_REGISTERED_FIELD_TRIALS_H_
+    <BLANKLINE>
+    """
+    registered_keys = {f.key for f in field_trials}
+    keys = '\n'.join(f'    "{k}",' for k in sorted(registered_keys))
+    return ('// This file was automatically generated. Do not edit.\n'
+            '\n'
+            '#ifndef GEN_REGISTERED_FIELD_TRIALS_H_\n'
+            '#define GEN_REGISTERED_FIELD_TRIALS_H_\n'
+            '\n'
+            '#include "absl/strings/string_view.h"\n'
+            '\n'
+            'namespace webrtc {\n'
+            '\n'
+            'inline constexpr absl::string_view kRegisteredFieldTrials[] = {\n'
+            f'{keys}\n'
+            '};\n'
+            '\n'
+            '}  // namespace webrtc\n'
+            '\n'
+            '#endif  // GEN_REGISTERED_FIELD_TRIALS_H_\n')
+
+
+def expired_field_trials(
+    threshold: date,
+    field_trials: FrozenSet[FieldTrial] = REGISTERED_FIELD_TRIALS
+) -> Set[FieldTrial]:
+    """Obtains expired field trials.
+
+    Args:
+      threshold: Date from which to check end date.
+      field_trials: Field trials to validate.
+
+    Returns:
+      All expired field trials.
+
+    >>> trials = {
+    ...     FieldTrial('Expired', '', date(1, 1, 1)),
+    ...     FieldTrial('Not-Expired', '', date(1, 1, 2)),
+    ... }
+    >>> expired_field_trials(date(1, 1, 1), trials)
+    {FieldTrial(key='Expired', bug='', end_date=datetime.date(1, 1, 1))}
+    """
+    return {f for f in field_trials if f.end_date <= threshold}
+
+
+def validate_field_trials(
+        field_trials: FrozenSet[FieldTrial] = ACTIVE_FIELD_TRIALS
+) -> List[str]:
+    """Validate that field trials conforms to the policy.
+
+    Args:
+      field_trials: Field trials to validate.
+
+    Returns:
+      A list of explanations for invalid field trials.
+    """
+    invalid = []
+    for trial in field_trials:
+        if not trial.key.startswith('WebRTC-'):
+            invalid.append(f'{trial.key} does not start with "WebRTC-".')
+        if len(trial.bug) <= 0:
+            invalid.append(f'{trial.key} must have an associated bug.')
+        if trial.end_date >= INDEFINITE:
+            invalid.append(f'{trial.key} must have an end date.')
+    return invalid
+
+
+def cmd_header(args: argparse.Namespace) -> None:
+    args.output.write(registry_header())
+
+
+def cmd_expired(args: argparse.Namespace) -> None:
+    today = todays_date()
+    diff = datetime.timedelta(days=args.in_days)
+    expired = expired_field_trials(today + diff)
+
+    if len(expired) <= 0:
+        return
+
+    expired_by_date = sorted([(f.end_date, f.key) for f in expired])
+    print('\n'.join(
+        f'{key} {"expired" if date <= today else "expires"} on {date}'
+        for date, key in expired_by_date))
+    if any(date <= today for date, _ in expired_by_date):
+        sys.exit(1)
+
+
+def cmd_validate(args: argparse.Namespace) -> None:
+    del args
+    invalid = validate_field_trials()
+
+    if len(invalid) <= 0:
+        return
+
+    print('\n'.join(sorted(invalid)))
+    sys.exit(1)
+
+
+def main() -> None:
+    parser = argparse.ArgumentParser()
+    subcommand = parser.add_subparsers(dest='cmd')
+
+    parser_header = subcommand.add_parser(
+        'header',
+        help='generate C++ header file containing registered field trial keys')
+    parser_header.add_argument('--output',
+                               default=sys.stdout,
+                               type=argparse.FileType('w'),
+                               required=False,
+                               help='output file')
+    parser_header.set_defaults(cmd=cmd_header)
+
+    parser_expired = subcommand.add_parser(
+        'expired',
+        help='lists all expired field trials',
+        description='''
+        Lists all expired field trials. Exits with a non-zero exit status if
+        any field trials has expired, ignoring the --in-days argument.
+        ''')
+    parser_expired.add_argument(
+        '--in-days',
+        default=0,
+        type=int,
+        required=False,
+        help='number of days relative to today to check')
+    parser_expired.set_defaults(cmd=cmd_expired)
+
+    parser_validate = subcommand.add_parser(
+        'validate',
+        help='validates that all field trials conforms to the policy.',
+        description='''
+        Validates that all field trials conforms to the policy. Exits with a
+        non-zero exit status if any field trials does not.
+        ''')
+    parser_validate.set_defaults(cmd=cmd_validate)
+
+    args = parser.parse_args()
+
+    if not args.cmd:
+        parser.print_help(sys.stderr)
+        sys.exit(1)
+
+    args.cmd(args)
+
+
+if __name__ == '__main__':
+    main()