Remove the 'audioDebugRecording' media constraint and the aec_dump AudioOptions flag.

webrtc/api/localaudiosource.cc

Index: webrtc/api/localaudiosource.cc
diff --git a/webrtc/api/localaudiosource.cc b/webrtc/api/localaudiosource.cc
index 4b961cf2a9791c218d3156ebdc8d2361a3d7d297..a118655516b810e79d93529a35ced3c408c008a5 100644
--- a/webrtc/api/localaudiosource.cc
+++ b/webrtc/api/localaudiosource.cc
@@ -50,8 +50,7 @@ void FromConstraints(const MediaConstraintsInterface::Constraints& constraints,
       {MediaConstraintsInterface::kHighpassFilter, options->highpass_filter},
       {MediaConstraintsInterface::kTypingNoiseDetection,
        options->typing_detection},
-      {MediaConstraintsInterface::kAudioMirroring, options->stereo_swapping},
-      {MediaConstraintsInterface::kAecDump, options->aec_dump}
+      {MediaConstraintsInterface::kAudioMirroring, options->stereo_swapping}
   };
 
   for (const auto& constraint : constraints) {