diff --git a/src/3rdparty/chromium/third_party/webrtc/sdk/objc/Framework/Classes/Common/RTCFieldTrials.mm b/src/3rdparty/chromium/third_party/webrtc/sdk/objc/Framework/Classes/Common/RTCFieldTrials.mm
--- a/src/3rdparty/chromium/third_party/webrtc/sdk/objc/Framework/Classes/Common/RTCFieldTrials.mm
+++ b/src/3rdparty/chromium/third_party/webrtc/sdk/objc/Framework/Classes/Common/RTCFieldTrials.mm
@@ -45,7 +45,7 @@ NSString *RTCFieldTrialTrendlineFilterValue(
   return [NSString stringWithFormat:format, windowSize, smoothingCoeff, thresholdGain];
 }
 
-void RTCInitFieldTrialDictionary(NSDictionary<NSString *, NSString *> *fieldTrials) {
+void RTCInitFieldTrialDictionary(NSDictionary *fieldTrials) {
   if (!fieldTrials) {
     RTCLogWarning(@"No fieldTrials provided.");
     return;
diff --git a/src/3rdparty/chromium/third_party/webrtc/sdk/objc/Framework/Headers/WebRTC/RTCFieldTrials.h b/src/3rdparty/chromium/third_party/webrtc/sdk/objc/Framework/Headers/WebRTC/RTCFieldTrials.h
--- a/src/3rdparty/chromium/third_party/webrtc/sdk/objc/Framework/Headers/WebRTC/RTCFieldTrials.h
+++ b/src/3rdparty/chromium/third_party/webrtc/sdk/objc/Framework/Headers/WebRTC/RTCFieldTrials.h
@@ -40,4 +40,4 @@ RTC_EXTERN NSString *RTCFieldTrialTrendlineFilterValue(
  *  Must be called before any other call into WebRTC. See:
  *  webrtc/system_wrappers/include/field_trial_default.h
  */
-RTC_EXTERN void RTCInitFieldTrialDictionary(NSDictionary<NSString *, NSString *> *fieldTrials);
+RTC_EXTERN void RTCInitFieldTrialDictionary(NSDictionary *fieldTrials);