Refactoring: move ownership of RtcEventLog from Call to PeerConnection

webrtc/api/peerconnectionfactory.cc

Index: webrtc/api/peerconnectionfactory.cc
diff --git a/webrtc/api/peerconnectionfactory.cc b/webrtc/api/peerconnectionfactory.cc
index f49c291e49ee210647e46f3ae3e49c036c93a055..e76701e4869d09a8dc6359c076469e975d8305b8 100644
--- a/webrtc/api/peerconnectionfactory.cc
+++ b/webrtc/api/peerconnectionfactory.cc
@@ -302,10 +302,11 @@ PeerConnectionFactory::CreateAudioTrack(const std::string& id,
 }
 
 webrtc::MediaControllerInterface* PeerConnectionFactory::CreateMediaController(
-    const cricket::MediaConfig& config) const {
+    const cricket::MediaConfig& config,
+    webrtc::RtcEventLog* event_log) const {
   RTC_DCHECK(signaling_thread_->IsCurrent());
   return MediaControllerInterface::Create(config, worker_thread_,
-                                          channel_manager_.get());
+                                          channel_manager_.get(), event_log);
 }
 
 cricket::TransportController* PeerConnectionFactory::CreateTransportController(