MediaStreamTrack: Add echo-cancellation and device-id to getSettings

content/renderer/media/webaudio_media_stream_source.cc

Index: content/renderer/media/webaudio_media_stream_source.cc
diff --git a/content/renderer/media/webaudio_media_stream_source.cc b/content/renderer/media/webaudio_media_stream_source.cc
index 7f4c75d37ff6f15c6fc451b96e8345aa83aad7b6..b44095d2ed579bd76365e7cb5540bcadf690bb92 100644
--- a/content/renderer/media/webaudio_media_stream_source.cc
+++ b/content/renderer/media/webaudio_media_stream_source.cc
@@ -25,6 +25,12 @@ WebAudioMediaStreamSource::~WebAudioMediaStreamSource() {
   EnsureSourceIsStopped();
 }
 
+void WebAudioMediaStreamSource::getSettings(
+    blink::WebMediaStreamTrack::Settings& settings) {
+  // This source type does not support echo cancellation.
+  settings.setEchoCancellation(false);
+}
+
 void WebAudioMediaStreamSource::setFormat(size_t number_of_channels,
                                           float sample_rate) {
   DCHECK(thread_checker_.CalledOnValidThread());