Reland 15721002: Hook up the device selection to the WebAudio live audio

media/audio/win/audio_unified_win_unittest.cc

Index: media/audio/win/audio_unified_win_unittest.cc
diff --git a/media/audio/win/audio_unified_win_unittest.cc b/media/audio/win/audio_unified_win_unittest.cc
index 4830ff0f60a57d6fff29cbbd3275f19588fa11d6..6fad0b7a58de36c16fb52e4e62ceb3fa9e41da4d 100644
--- a/media/audio/win/audio_unified_win_unittest.cc
+++ b/media/audio/win/audio_unified_win_unittest.cc
@@ -215,7 +215,8 @@ class AudioUnifiedStreamWrapper {
 
  private:
   AudioOutputStream* CreateOutputStream() {
-    AudioOutputStream* aos = audio_man_->MakeAudioOutputStream(params_);
+    AudioOutputStream* aos = audio_man_->MakeAudioOutputStream(params_,
+                                                               std::string());
     EXPECT_TRUE(aos);
     return aos;
   }