Support the googNoiseReduction constraint in SelectSettings for video-device capture.

content/renderer/media/user_media_client_impl.cc

 // Copyright (c) 2012 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/user_media_client_impl.h"
 
 #include <stddef.h>
 
 #include <algorithm>
 #include <utility>
@@ skipping 354 matching lines @@
   DCHECK(CalledOnValidThread());
   DCHECK(controls->video.requested);
   DCHECK(IsDeviceSource(controls->video.stream_source));
 
   VideoDeviceCaptureCapabilities capabilities;
   capabilities.device_capabilities = std::move(video_input_capabilities);
   capabilities.power_line_capabilities = {
       media::PowerLineFrequency::FREQUENCY_DEFAULT,
       media::PowerLineFrequency::FREQUENCY_50HZ,
       media::PowerLineFrequency::FREQUENCY_60HZ};
+  capabilities.noise_reduction_capabilities = {rtc::Optional<bool>(),
+                                               rtc::Optional<bool>(true),
+                                               rtc::Optional<bool>(false)};
 
   base::PostTaskAndReplyWithResult(
       worker_task_runner_.get(), FROM_HERE,
       base::Bind(&SelectVideoDeviceCaptureSourceSettings,
                  std::move(capabilities),
                  user_media_request.videoConstraints()),
       base::Bind(&UserMediaClientImpl::FinalizeSelectVideoDeviceSourceSettings,
                  weak_factory_.GetWeakPtr(), request_id, user_media_request,
                  base::Passed(&controls), request_settings));
 }
@@ skipping 858 matching lines @@
                          sources_waiting_for_callback_.end(), source);
   if (found != sources_waiting_for_callback_.end())
     OnTrackStarted(source, result, result_name);
 }
 
 void UserMediaClientImpl::OnDestruct() {
   delete this;
 }
 
 }  // namespace content