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

webrtc/api/localaudiosource.cc

 /*
  *  Copyright 2013 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.
  */
 
@@ skipping 32 matching lines @@
       {MediaConstraintsInterface::kAutoGainControl, options->auto_gain_control},
       {MediaConstraintsInterface::kExperimentalAutoGainControl,
        options->experimental_agc},
       {MediaConstraintsInterface::kNoiseSuppression,
        options->noise_suppression},
       {MediaConstraintsInterface::kExperimentalNoiseSuppression,
        options->experimental_ns},
       {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) {
     bool value = false;
     if (!rtc::FromString(constraint.value, &value))
       continue;
 
     for (auto& entry : key_to_value) {
       if (constraint.key.compare(entry.name) == 0)
         entry.value = rtc::Optional<bool>(value);
@@ skipping 22 matching lines @@
   // constraints.
   FromConstraints(constraints->GetOptional(), &options_);
 
   cricket::AudioOptions mandatory_options;
   FromConstraints(constraints->GetMandatory(), &mandatory_options);
   options_.SetAll(mandatory_options);
   source_state_ = kLive;
 }
 
 }  // namespace webrtc