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 2f33b415481291a4e8f9d396db4d61e88ac21268..734c2d09d3915db1adbc9e93d5d6218c7ecef62f 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"
@@ -329,6 +331,17 @@ class PeerConnectionInterface : public rtc::RefCountInterface {
   virtual rtc::scoped_refptr<DtmfSenderInterface> CreateDtmfSender(
       AudioTrackInterface* track) = 0;
 
+  // TODO(deadbeef): Make these pure virtual once all subclasses implement them.
+  virtual std::vector<rtc::scoped_refptr<RtpSenderInterface>> GetSenders()
+      const {
+    return std::vector<rtc::scoped_refptr<RtpSenderInterface>>();
+  }
+
+  virtual std::vector<rtc::scoped_refptr<RtpReceiverInterface>> GetReceivers()
+      const {
+    return std::vector<rtc::scoped_refptr<RtpReceiverInterface>>();
+  }
+
   virtual bool GetStats(StatsObserver* observer,
                         MediaStreamTrackInterface* track,
                         StatsOutputLevel level) = 0;