Add a virtual beamforming audio device on ChromeOS.

media/audio/win/audio_manager_win.cc

Index: media/audio/win/audio_manager_win.cc
diff --git a/media/audio/win/audio_manager_win.cc b/media/audio/win/audio_manager_win.cc
index 7da916d3f0783bea84d1c89fdce67bce075c881c..2e3ccf5dfbcae62d17d82324f28c2d335cf16e48 100644
--- a/media/audio/win/audio_manager_win.cc
+++ b/media/audio/win/audio_manager_win.cc
@@ -312,9 +312,9 @@ AudioParameters AudioManagerWin::GetInputStreamParameters(
 
   if (FAILED(hr) || !parameters.IsValid()) {
     // Windows Wave implementation is being used.
-    parameters = AudioParameters(
-        AudioParameters::AUDIO_PCM_LINEAR, CHANNEL_LAYOUT_STEREO, 48000, 16,
-        kFallbackBufferSize, AudioParameters::NO_EFFECTS);
+    parameters =
+        AudioParameters(AudioParameters::AUDIO_PCM_LINEAR,
+                        CHANNEL_LAYOUT_STEREO, 48000, 16, kFallbackBufferSize);
   }
 
   int user_buffer_size = GetUserBufferSize();
@@ -513,7 +513,7 @@ AudioParameters AudioManagerWin::GetPreferredOutputStreamParameters(
 
   return AudioParameters(
       AudioParameters::AUDIO_PCM_LOW_LATENCY, channel_layout,
-      sample_rate, bits_per_sample, buffer_size, effects);
+      sample_rate, bits_per_sample, buffer_size, "", effects);
 }
 
 AudioInputStream* AudioManagerWin::CreatePCMWaveInAudioInputStream(