Cleanup: Remove video constraint names

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 30 matching lines @@
     "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 {
 
+// Controls whether the hotword audio stream is used on supported platforms.
+const char kMediaStreamAudioHotword[] = "googHotword";
+
 // Constant constraint keys which enables default audio constraints on
 // mediastreams with audio.
 struct {
   const char* key;
   bool value;
 } const kDefaultAudioConstraints[] = {
   { MediaAudioConstraints::kEchoCancellation, true },
   { MediaAudioConstraints::kGoogEchoCancellation, true },
 #if defined(OS_ANDROID)
   { MediaAudioConstraints::kGoogExperimentalEchoCancellation, false },
@@ skipping 402 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