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

content/browser/media/media_internals.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/media/media_internals.h"
 
 #include "base/strings/string16.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/stringprintf.h"
 #include "content/public/browser/browser_thread.h"
@@ skipping 92 matching lines @@
 AudioLogImpl::~AudioLogImpl() {}
 
 void AudioLogImpl::OnCreated(int component_id,
                              const media::AudioParameters& params,
                              const std::string& device_id) {
   base::DictionaryValue dict;
   StoreComponentMetadata(component_id, &dict);
 
   dict.SetString(kAudioLogStatusKey, "created");
   dict.SetString("device_id", device_id);
-  dict.SetInteger("input_channels", params.input_channels());
   dict.SetInteger("frames_per_buffer", params.frames_per_buffer());
   dict.SetInteger("sample_rate", params.sample_rate());
   dict.SetInteger("channels", params.channels());
   dict.SetString("channel_layout",
                  ChannelLayoutToString(params.channel_layout()));
   dict.SetString("effects", EffectsToString(params.effects()));
 
   media_internals_->SendUpdateAndCache(
       FormatCacheKey(component_id), kAudioLogUpdateFunction, &dict);
 }
@@ skipping 143 matching lines @@
     const std::string& function,
     const base::DictionaryValue* value) {
   SendUpdate(SerializeUpdate(function, value));
 
   base::AutoLock auto_lock(lock_);
   scoped_ptr<base::Value> out_value;
   CHECK(cached_data_.Remove(cache_key, &out_value));
 }
 
 }  // namespace content