| Index: webrtc/pc/mediasession.h | 
| diff --git a/webrtc/pc/mediasession.h b/webrtc/pc/mediasession.h | 
| index 06815ecba319970c117318a64d4c6d8f4ea6c3a4..4711ba065bb1da221c26ae91cabf817a323c63fd 100644 | 
| --- a/webrtc/pc/mediasession.h | 
| +++ b/webrtc/pc/mediasession.h | 
| @@ -92,6 +92,10 @@ struct RtpTransceiverDirection { | 
| MediaContentDirection md); | 
|  | 
| MediaContentDirection ToMediaContentDirection() const; | 
| + | 
| +  RtpTransceiverDirection Reversed() const { | 
| +    return RtpTransceiverDirection(recv, send); | 
| +  } | 
| }; | 
|  | 
| RtpTransceiverDirection | 
|  |