Revert of Switch to STA mode for audio thread and WASAPI I/O streams.

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 955b42859d09b2bc9de945e4157e03d640b2d412..e933a4471303817b75ae38127cf7dd7db51eab39 100644
--- a/media/audio/win/audio_low_latency_input_win.h
+++ b/media/audio/win/audio_low_latency_input_win.h
@@ -131,13 +131,6 @@
                               WAVEFORMATEX** device_format,
                               int* effects);
 
-  // Handles sharing of COM pointers between the audio and capture threads.  The
-  // marshal method must be called on the audio manager thread, while unmarshal
-  // must be called on |capture_thread_|.
-  bool MarshalComPointers();
-  void UnmarshalComPointers(
-      base::win::ScopedComPtr<IAudioCaptureClient>* audio_capture_client);
-
   // Our creator, the audio manager needs to be notified when we close.
   AudioManagerWin* manager_;
 
@@ -186,17 +179,8 @@
   // Pointer to the object that will receive the recorded audio samples.
   AudioInputCallback* sink_;
 
-  // ------------------------------------------------------
-  // Warning: COM pointers must be marshaled from the audio thread to be used
-  // on any other thread. Do not use any of these interfaces on a thread other
-  // than the audio thread.  See MarshalComPointers() and UnmarshalComPointers()
-  // for marshaling pointers to the capture thread.
-
-  // Stream into which the COM pointers below are marshaled so that they can
-  // be used on another thread.
-  base::win::ScopedComPtr<IStream> com_stream_;
-
   // Windows Multimedia Device (MMDevice) API interfaces.
+
   // An IMMDevice interface which represents an audio endpoint device.
   base::win::ScopedComPtr<IMMDevice> endpoint_device_;
 
@@ -214,17 +198,16 @@
   // details.
   base::win::ScopedComPtr<IAudioClient> audio_render_client_for_loopback_;
 
+  // The IAudioCaptureClient interface enables a client to read input data
+  // from a capture endpoint buffer.
+  base::win::ScopedComPtr<IAudioCaptureClient> audio_capture_client_;
+
   // The ISimpleAudioVolume interface enables a client to control the
   // master volume level of an audio session.
   // The volume-level is a value in the range 0.0 to 1.0.
   // This interface does only work with shared-mode streams.
   base::win::ScopedComPtr<ISimpleAudioVolume> simple_audio_volume_;
 
-  // The IAudioCaptureClient interface enables a client to read input data
-  // from a capture endpoint buffer.
-  base::win::ScopedComPtr<IAudioCaptureClient> audio_capture_client_;
-  // ------------------------------------------------------
-
   // The audio engine will signal this event each time a buffer has been
   // recorded.
   base::win::ScopedHandle audio_samples_ready_event_;