Fix the maximum native sample rate in AudioProcessing

webrtc/modules/audio_conference_mixer/source/audio_conference_mixer_impl.cc

 /*
  *  Copyright (c) 2012 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 273 matching lines @@
                      MaxNumChannels(&rampOutList)));
 
         mixedAudio->UpdateFrame(-1, _timeStamp, NULL, 0, _outputFrequency,
                                 AudioFrame::kNormalSpeech,
                                 AudioFrame::kVadPassive, num_mixed_channels);
 
         _timeStamp += static_cast<uint32_t>(_sampleSize);
 
         // We only use the limiter if it supports the output sample rate and
         // we're actually mixing multiple streams.
-        use_limiter_ = _numMixedParticipants > 1 &&
-                       _outputFrequency <= kAudioProcMaxNativeSampleRateHz;
+        use_limiter_ =
+            _numMixedParticipants > 1 &&
+            _outputFrequency <= AudioProcessing::kMaxNativeSampleRateHz;
 
         MixFromList(*mixedAudio, &mixList);
         MixAnonomouslyFromList(*mixedAudio, &additionalFramesList);
         MixAnonomouslyFromList(*mixedAudio, &rampOutList);
 
         if(mixedAudio->samples_per_channel_ == 0) {
             // Nothing was mixed, set the audio samples to silence.
             mixedAudio->samples_per_channel_ = _sampleSize;
             mixedAudio->Mute();
         } else {
@@ skipping 617 matching lines @@
 
     if(error != _limiter->kNoError) {
         WEBRTC_TRACE(kTraceError, kTraceAudioMixerServer, _id,
                      "Error from AudioProcessing: %d", error);
         assert(false);
         return false;
     }
     return true;
 }
 }  // namespace webrtc