Use a separate thread for audio capturing and encoding.

remoting/host/chromoting_host_context.h

 // 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.
 
 #ifndef REMOTING_HOST_CHROMOTING_HOST_CONTEXT_H_
 #define REMOTING_HOST_CHROMOTING_HOST_CONTEXT_H_
 
 #include <string>
 
 #include "base/gtest_prod_util.h"
@@ skipping 31 matching lines @@
   // plugin this corresponds to the main plugin thread.
   virtual base::SingleThreadTaskRunner* ui_task_runner();
 
   // Task runner for the thread used by the ScreenRecorder to capture
   // the screen.
   virtual base::SingleThreadTaskRunner* capture_task_runner();
 
   // Task runner for the thread used to encode video streams.
   virtual base::SingleThreadTaskRunner* encode_task_runner();
 
+  // Task runner for the thread used for audio capture and encoding.
+  virtual base::SingleThreadTaskRunner* audio_task_runner();
+
   // Task runner for the thread used for network IO. This thread runs
   // a libjingle message loop, and is the only thread on which
   // libjingle code may be run.
   virtual base::SingleThreadTaskRunner* network_task_runner();
 
   // Task runner for the thread that is used by the EventExecutor.
   //
   // TODO(sergeyu): Do we need a separate thread for EventExecutor?
   // Can we use some other thread instead?
   virtual base::SingleThreadTaskRunner* desktop_task_runner();
@@ skipping 11 matching lines @@
 
   // A thread that hosts all network operations.
   base::Thread network_thread_;
 
   // A thread that hosts screen capture.
   base::Thread capture_thread_;
 
   // A thread that hosts all encode operations.
   base::Thread encode_thread_;
 
+  // A thread that hosts audio capture and encoding.
+  base::Thread audio_thread_;
+
   // A thread that hosts input injection.
   base::Thread desktop_thread_;
 
   // Thread for blocking IO operations.
   base::Thread file_thread_;
 
   scoped_refptr<base::SingleThreadTaskRunner> ui_task_runner_;
 
   scoped_refptr<net::URLRequestContextGetter> url_request_context_getter_;
 
   DISALLOW_COPY_AND_ASSIGN(ChromotingHostContext);
 };
 
 }  // namespace remoting
 
 #endif  // REMOTING_HOST_CHROMOTING_HOST_CONTEXT_H_