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

content/browser/renderer_host/media/audio_input_renderer_host.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 "content/browser/renderer_host/media/audio_input_renderer_host.h"
 
 #include "base/bind.h"
 #include "base/memory/shared_memory.h"
 #include "base/metrics/histogram.h"
 #include "base/numerics/safe_math.h"
@@ skipping 249 matching lines @@
   if (LookupById(stream_id) != NULL) {
     SendErrorMessage(stream_id, STREAM_ALREADY_EXISTS);
     return;
   }
 
   media::AudioParameters audio_params(config.params);
   if (media_stream_manager_->audio_input_device_manager()->
       ShouldUseFakeDevice()) {
     audio_params.Reset(
         media::AudioParameters::AUDIO_FAKE,
-        config.params.channel_layout(), config.params.channels(), 0,
+        config.params.channel_layout(), config.params.channels(),
         config.params.sample_rate(), config.params.bits_per_sample(),
         config.params.frames_per_buffer());
   }
 
   // Check if we have the permission to open the device and which device to use.
   std::string device_name;
   std::string device_id = media::AudioManagerBase::kDefaultDeviceId;
   if (audio_params.format() != media::AudioParameters::AUDIO_FAKE) {
     const StreamDeviceInfo* info = media_stream_manager_->
         audio_input_device_manager()->GetOpenedDeviceInfoById(session_id);
@@ skipping 183 matching lines @@
   // TODO(hclam): Implement a faster look up method.
   for (AudioEntryMap::iterator i = audio_entries_.begin();
        i != audio_entries_.end(); ++i) {
     if (controller == i->second->controller.get())
       return i->second;
   }
   return NULL;
 }
 
 }  // namespace content