Added functions on libjingle API to start and stop the recording of an RtcEventLog.

talk/app/webrtc/peerconnectionfactory.cc

Index: talk/app/webrtc/peerconnectionfactory.cc
diff --git a/talk/app/webrtc/peerconnectionfactory.cc b/talk/app/webrtc/peerconnectionfactory.cc
index c329446319dd9c02f8b0814ddcbe9cce9ff5cf8b..2952eac959e3b1bdd0377f7769084e69b210db2e 100644
--- a/talk/app/webrtc/peerconnectionfactory.cc
+++ b/talk/app/webrtc/peerconnectionfactory.cc
@@ -217,6 +217,16 @@ bool PeerConnectionFactory::StartAecDump(rtc::PlatformFile file) {
   return channel_manager_->StartAecDump(file);
 }
 
+bool PeerConnectionFactory::StartRtcEventLog(rtc::PlatformFile file) {
+  RTC_DCHECK(signaling_thread_->IsCurrent());
+  return channel_manager_->StartRtcEventLog(file);
+}
+
+void PeerConnectionFactory::StopRtcEventLog() {
+  RTC_DCHECK(signaling_thread_->IsCurrent());
+  channel_manager_->StopRtcEventLog();
+}
+
 rtc::scoped_refptr<PeerConnectionInterface>
 PeerConnectionFactory::CreatePeerConnection(
     const PeerConnectionInterface::RTCConfiguration& configuration,