Use a separate thread for audio capturing and encoding.

remoting/host/chromoting_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 "remoting/host/chromoting_host.h"
 
 #include "base/bind.h"
 #include "base/callback.h"
 #include "base/logging.h"
 #include "base/message_loop_proxy.h"
@@ skipping 217 matching lines @@
 
   recorder_ = new ScreenRecorder(context_->capture_task_runner(),
                                  context_->encode_task_runner(),
                                  context_->network_task_runner(),
                                  desktop_environment_->capturer(),
                                  video_encoder);
   if (client->connection()->session()->config().is_audio_enabled()) {
     scoped_ptr<AudioEncoder> audio_encoder =
         CreateAudioEncoder(client->connection()->session()->config());
     audio_scheduler_ = new AudioScheduler(
-        context_->capture_task_runner(),
+        context_->audio_task_runner(),
         context_->network_task_runner(),
         desktop_environment_->audio_capturer(),
         audio_encoder.Pass(),
         client->connection()->audio_stub());
   }
 
   // Immediately add the connection and start the session.
   recorder_->AddConnection(client->connection());
   recorder_->Start();
   desktop_environment_->OnSessionStarted(client->CreateClipboardProxy());
@@ skipping 252 matching lines @@
                     OnShutdown());
 
   for (std::vector<base::Closure>::iterator it = shutdown_tasks_.begin();
        it != shutdown_tasks_.end(); ++it) {
     it->Run();
   }
   shutdown_tasks_.clear();
 }
 
 }  // namespace remoting