Do not pass the string device_id via IPC message to create an audio input stream

content/renderer/media/webrtc_audio_device_unittest.cc

Index: content/renderer/media/webrtc_audio_device_unittest.cc
diff --git a/content/renderer/media/webrtc_audio_device_unittest.cc b/content/renderer/media/webrtc_audio_device_unittest.cc
index 4fb749202e99a4483d61ce37b9ce4e2e2c45cf81..2d111e0f5de5e2fe3e4ee03e65f40cd7d1f09c21 100644
--- a/content/renderer/media/webrtc_audio_device_unittest.cc
+++ b/content/renderer/media/webrtc_audio_device_unittest.cc
@@ -100,11 +100,9 @@ bool InitializeCapturer(WebRtcAudioDeviceImpl* webrtc_audio_device) {
   int sample_rate = hardware_config->GetInputSampleRate();
   media::ChannelLayout channel_layout =
       hardware_config->GetInputChannelLayout();
-  if (!capturer->Initialize(channel_layout, sample_rate))
+  if (!capturer->Initialize(channel_layout, sample_rate, 1))
     return false;
 
-  // Ensures that the default capture device is utilized.
-  webrtc_audio_device->capturer()->SetDevice(1);
   return true;
 }