Exposing RtpSenders and RtpReceivers from PeerConnection.

talk/app/webrtc/peerconnectioninterface.h

Index: talk/app/webrtc/peerconnectioninterface.h
diff --git a/talk/app/webrtc/peerconnectioninterface.h b/talk/app/webrtc/peerconnectioninterface.h
index ca853385e6327fdcad52014b32abc115685e80c1..53e48c230fe76e7663f5662bf1d972ca7241da85 100644
--- a/talk/app/webrtc/peerconnectioninterface.h
+++ b/talk/app/webrtc/peerconnectioninterface.h
@@ -77,6 +77,8 @@
 #include "talk/app/webrtc/dtlsidentitystore.h"
 #include "talk/app/webrtc/jsep.h"
 #include "talk/app/webrtc/mediastreaminterface.h"
+#include "talk/app/webrtc/rtpreceiverinterface.h"
+#include "talk/app/webrtc/rtpsenderinterface.h"
 #include "talk/app/webrtc/statstypes.h"
 #include "talk/app/webrtc/umametrics.h"
 #include "webrtc/base/fileutils.h"
@@ -322,6 +324,12 @@ class PeerConnectionInterface : public rtc::RefCountInterface {
   virtual rtc::scoped_refptr<DtmfSenderInterface> CreateDtmfSender(
       AudioTrackInterface* track) = 0;
 
+  typedef std::vector<rtc::scoped_refptr<RtpSenderInterface>> RtpSenders;

[pthatcher1, 2015/09/17 04:25:46]

I think we should call it something like RefcountedRtpSenders to make it clear
they are refcounted. 

Also, we can pull it out of into the main namespace, I think.

[Taylor Brandstetter, 2015/09/23 00:10:45]

I assume you mean "out of PeerConnectionInterface"? Also, how about
"RtpSenderRefptrs" for extra clarity? "RefcountedRtpSenders" seems a little
redundant since RtpSenderInterface is inherently ref-counted.

[pthatcher1, 2015/09/23 14:47:39]

Yes, out of PeerConnectionInterface.

Actually, the more I think about it, the more I think we should just use
std::vector<rtc::scoped_refptr<RtpReceiverInterface>> instead of
RtpSenderRefptrs.  It's longer, but it's only in a few places and it makes
everything more clear.

+  virtual RtpSenders GetSenders() = 0;
+
+  typedef std::vector<rtc::scoped_refptr<RtpReceiverInterface>> RtpReceivers;
+  virtual RtpReceivers GetReceivers() = 0;
+
   virtual bool GetStats(StatsObserver* observer,
                         MediaStreamTrackInterface* track,
                         StatsOutputLevel level) = 0;