MediaStream audio: Refactor 3 separate "glue" implementations into one.

content/renderer/media/media_stream_audio_processor_options.cc

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "content/renderer/media/media_stream_audio_processor_options.h"
 
 #include <stddef.h>
 #include <utility>
 
 #include "base/files/file_path.h"
@@ skipping 12 matching lines @@
 #include "media/base/audio_parameters.h"
 #include "third_party/webrtc/modules/audio_processing/include/audio_processing.h"
 #include "third_party/webrtc/modules/audio_processing/typing_detection.h"
 
 namespace content {
 
 const char MediaAudioConstraints::kEchoCancellation[] = "echoCancellation";
 const char MediaAudioConstraints::kGoogEchoCancellation[] =
     "googEchoCancellation";
 const char MediaAudioConstraints::kGoogExperimentalEchoCancellation[] =
-    "googEchoCancellation2";
+    "googExperimentalEchoCancellation";
 const char MediaAudioConstraints::kGoogAutoGainControl[] =
     "googAutoGainControl";
 const char MediaAudioConstraints::kGoogExperimentalAutoGainControl[] =
-    "googAutoGainControl2";
+    "googExperimentalAutoGainControl";
 const char MediaAudioConstraints::kGoogNoiseSuppression[] =
     "googNoiseSuppression";
 const char MediaAudioConstraints::kGoogExperimentalNoiseSuppression[] =
-    "googNoiseSuppression2";
+    "googExperimentalNoiseSuppression";
 const char MediaAudioConstraints::kGoogBeamforming[] = "googBeamforming";
 const char MediaAudioConstraints::kGoogArrayGeometry[] = "googArrayGeometry";
 const char MediaAudioConstraints::kGoogHighpassFilter[] = "googHighpassFilter";
 const char MediaAudioConstraints::kGoogTypingNoiseDetection[] =
     "googTypingNoiseDetection";
 const char MediaAudioConstraints::kGoogAudioMirroring[] = "googAudioMirroring";
 
 namespace {
 
 // Constant constraint keys which enables default audio constraints on
@@ skipping 411 matching lines @@
 
   // Give preference to the audio constraint over the device-supplied mic
   // positions. This is mainly for testing purposes.
   return WebrtcPointsFromMediaPoints(
       constraints_geometry.empty()
           ? input_params.mic_positions
           : media::ParsePointsFromString(constraints_geometry));
 }
 
 }  // namespace content