Tiny little refactoring of DesktopEnvironment.

remoting/host/ipc_audio_capturer.h

Index: remoting/host/ipc_audio_capturer.h
diff --git a/remoting/host/ipc_audio_capturer.h b/remoting/host/ipc_audio_capturer.h
index f6048b47472dd200c512c331593426871a2e55a2..f49facbc51f63a08ca7dc61ddda5ff63773537db 100644
--- a/remoting/host/ipc_audio_capturer.h
+++ b/remoting/host/ipc_audio_capturer.h
@@ -26,18 +26,15 @@ class IpcAudioCapturer : public AudioCapturer {
   virtual void Stop() OVERRIDE;
   virtual bool IsStarted() OVERRIDE;
 
-  // Called by DesktopSessionProxy when an audio packet was received.
-  void OnAudioPacket(scoped_ptr<AudioPacket> packet);
-
  private:
-  // Invoked when an audio packet was received.
-  PacketCapturedCallback callback_;
-
   // Wraps the IPC channel to the desktop session agent.
   scoped_refptr<DesktopSessionProxy> desktop_session_proxy_;
 
   base::ThreadChecker thread_checker_;
 
+  // True if the capturer has been started.
+  bool started_;
+
   DISALLOW_COPY_AND_ASSIGN(IpcAudioCapturer);
 };