Revert 274823 "Support for audio output devices for getMediaDevi..."

content/browser/renderer_host/media/media_stream_manager.h

Index: content/browser/renderer_host/media/media_stream_manager.h
===================================================================
--- content/browser/renderer_host/media/media_stream_manager.h	(revision 278170)
+++ content/browser/renderer_host/media/media_stream_manager.h	(working copy)
@@ -246,11 +246,6 @@
 
   void DoEnumerateDevices(const std::string& label);
 
-  // Enumerates audio output devices. No caching.
-  void EnumerateAudioOutputDevices(const std::string& label);
-
-  void AudioOutputDevicesEnumerated(const StreamDeviceInfoArray& devices);
-
   // Helpers.
   // Checks if all devices that was requested in the request identififed by
   // |label| has been opened and set the request state accordingly.
@@ -358,8 +353,7 @@
                                StreamDeviceInfoArray devices,
                                gfx::NativeViewId window_id);
 
-  // Task runner shared by VideoCaptureManager and AudioInputDeviceManager and
-  // used for enumerating audio output devices.
+  // Task runner shared by VideoCaptureManager and AudioInputDeviceManager.
   // Note: Enumeration tasks may take seconds to complete so must never be run
   // on any of the BrowserThreads (UI, IO, etc).  See http://crbug.com/256945.
   scoped_refptr<base::SingleThreadTaskRunner> device_task_runner_;