Correctly handle enumerations for AudioManagers that report only the default audio output device.

content/browser/renderer_host/media/audio_renderer_host.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.
 //
 // AudioRendererHost serves audio related requests from AudioRenderer which
 // lives inside the render process and provide access to audio hardware.
 //
 // This class is owned by RenderProcessHostImpl, and instantiated on UI
 // thread, but all other operations and method calls happen on IO thread, so we
 // need to be extra careful about the lifetime of this object. AudioManager is a
@@ skipping 213 matching lines @@
 
   // Invoke |callback| after permission to use a device has been checked.
   void AccessChecked(scoped_ptr<MediaStreamUIProxy> ui_proxy,
                      const OutputDeviceAccessCB& callback,
                      bool have_access);
 
   // Translate the hashed |device_id| to a unique device ID.
   void TranslateDeviceID(const std::string& device_id,
                          const GURL& gurl_security_origin,
                          const OutputDeviceInfoCB& callback,
-                         const AudioOutputDeviceEnumeration& device_infos);
+                         const AudioOutputDeviceEnumeration& enumeration);
 
   // Helper method to check if the authorization procedure for stream
   // |stream_id| has started.
   bool IsAuthorizationStarted(int stream_id);
 
   // ID of the RenderProcessHost that owns this instance.
   const int render_process_id_;
 
   media::AudioManager* const audio_manager_;
   AudioMirroringManager* const mirroring_manager_;
@@ skipping 21 matching lines @@
   // The maximum number of simultaneous streams during the lifetime of this
   // host. Reported as UMA stat at shutdown.
   size_t max_simultaneous_streams_;
 
   DISALLOW_COPY_AND_ASSIGN(AudioRendererHost);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_MEDIA_AUDIO_RENDERER_HOST_H_