Adding WebRTC-Audio-ForceNoTWCC field trial

Bug: webrtc:8243
Change-Id: I74864b8e67cd9c62c5fe26a03efdcdca01d2a93f
Reviewed-on: https://webrtc-review.googlesource.com/83323
Reviewed-by: Anders Carlsson <andersc@webrtc.org>
Commit-Queue: Alex Narest <alexnarest@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#23596}
diff --git a/sdk/objc/Framework/Classes/Common/RTCFieldTrials.mm b/sdk/objc/Framework/Classes/Common/RTCFieldTrials.mm
index 2e4b794..8a55610 100644
--- a/sdk/objc/Framework/Classes/Common/RTCFieldTrials.mm
+++ b/sdk/objc/Framework/Classes/Common/RTCFieldTrials.mm
@@ -21,6 +21,7 @@
 
 NSString * const kRTCFieldTrialAudioSendSideBweKey = @"WebRTC-Audio-SendSideBwe";
 NSString * const kRTCFieldTrialAudioSendSideBweForVideoKey = @"WebRTC-Audio-SendSideBwe-For-Video";
+NSString * const kRTCFieldTrialAudioForceNoTWCCKey = @"WebRTC-Audio-ForceNoTWCC";
 NSString * const kRTCFieldTrialSendSideBweWithOverheadKey = @"WebRTC-SendSideBwe-WithOverhead";
 NSString * const kRTCFieldTrialFlexFec03AdvertisedKey = @"WebRTC-FlexFEC-03-Advertised";
 NSString * const kRTCFieldTrialFlexFec03Key = @"WebRTC-FlexFEC-03";