Adds COM init to AudioManager thread for Windows

media/audio/win/audio_low_latency_input_win.h

Index: media/audio/win/audio_low_latency_input_win.h
diff --git a/media/audio/win/audio_low_latency_input_win.h b/media/audio/win/audio_low_latency_input_win.h
index 049406409f41440f713482d41d06b6acee22893a..e83fc9268af1d1979a56ef4cc81e1a0ca41bf7cd 100644
--- a/media/audio/win/audio_low_latency_input_win.h
+++ b/media/audio/win/audio_low_latency_input_win.h
@@ -35,10 +35,6 @@
 //
 // Core Audio API details:
 //
-// - CoInitializeEx() is called on the creating thread and on the internal
-//   capture thread. Each thread's concurrency model and apartment is set
-//   to multi-threaded (MTA). CHECK() is called to ensure that we crash if
-//   CoInitializeEx(MTA) fails.
 // - Utilized MMDevice interfaces:
 //     o IMMDeviceEnumerator
 //     o IMMDevice
@@ -134,10 +130,6 @@ class MEDIA_EXPORT WASAPIAudioInputStream
   static HRESULT GetMixFormat(const std::string& device_id,
                               WAVEFORMATEX** device_format);
 
-  // Initializes the COM library for use by the calling thread and set the
-  // thread's concurrency model to multi-threaded.
-  base::win::ScopedCOMInitializer com_init_;
-
   // Our creator, the audio manager needs to be notified when we close.
   AudioManagerWin* manager_;