Fixing some issues with the direction attribute of m-lines in offers.

talk/app/webrtc/peerconnection.h

Index: talk/app/webrtc/peerconnection.h
diff --git a/talk/app/webrtc/peerconnection.h b/talk/app/webrtc/peerconnection.h
index c47f90372e3e9d0586cf045e90731b5516989a22..2d388ae9f913912990af0541dd8eae67008da745 100644
--- a/talk/app/webrtc/peerconnection.h
+++ b/talk/app/webrtc/peerconnection.h
@@ -51,8 +51,6 @@ typedef std::vector<PortAllocatorFactoryInterface::TurnConfiguration>
 
 // Populates |session_options| from |rtc_options|, and returns true if options
 // are valid.
-// Send streams should already be added to |session_options| before this method
-// is called, as this affects the values of recv_audio and recv_video.
 bool ConvertRtcOptionsForOffer(
     const PeerConnectionInterface::RTCOfferAnswerOptions& rtc_options,
     cricket::MediaSessionOptions* session_options);