Revert of Revert of Remove the last piece of deprecated synchronous IO code.

media/audio/win/audio_low_latency_input_win.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "media/audio/win/audio_low_latency_input_win.h"
 
 #include "base/logging.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/strings/utf_string_conversions.h"
 #include "media/audio/win/audio_manager_win.h"
@@ skipping 264 matching lines @@
   int effects = AudioParameters::NO_EFFECTS;
   if (SUCCEEDED(GetMixFormat(device_id, &audio_engine_mix_format, &effects))) {
     sample_rate = static_cast<int>(audio_engine_mix_format->nSamplesPerSec);
     channel_layout = audio_engine_mix_format->nChannels == 1 ?
         CHANNEL_LAYOUT_MONO : CHANNEL_LAYOUT_STEREO;
   }
 
   // Use 10ms frame size as default.
   int frames_per_buffer = sample_rate / 100;
   return AudioParameters(
-      AudioParameters::AUDIO_PCM_LOW_LATENCY, channel_layout, 0, sample_rate,
+      AudioParameters::AUDIO_PCM_LOW_LATENCY, channel_layout, sample_rate,
       16, frames_per_buffer, effects);
 }
 
 // static
 HRESULT WASAPIAudioInputStream::GetMixFormat(const std::string& device_id,
                                              WAVEFORMATEX** device_format,
                                              int* effects) {
   DCHECK(effects);
 
   // It is assumed that this static method is called from a COM thread, i.e.,
@@ skipping 445 matching lines @@
     return hr;
 
   // Obtain a reference to the ISimpleAudioVolume interface which enables
   // us to control the master volume level of an audio session.
   hr = audio_client_->GetService(__uuidof(ISimpleAudioVolume),
                                  simple_audio_volume_.ReceiveVoid());
   return hr;
 }
 
 }  // namespace media