Sync the RTCPeerConnection interface with the spec

third_party/WebKit/Source/modules/mediastream/RTCPeerConnection.cpp

 /*
  * Copyright (C) 2012 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
@@ skipping 343 matching lines @@
 
     if (!sessionDescription) {
         exceptionState.throwDOMException(TypeMismatchError, ExceptionMessages::argumentNullOrIncorrectType(1, "RTCSessionDescription"));
         return;
     }
 
     RTCVoidRequest* request = RTCVoidRequestImpl::create(executionContext(), this, successCallback, errorCallback);
     m_peerHandler->setLocalDescription(request, sessionDescription->webSessionDescription());
 }
 
-RTCSessionDescription* RTCPeerConnection::localDescription(ExceptionState& exceptionState)
+RTCSessionDescription* RTCPeerConnection::localDescription()
 {
     WebRTCSessionDescription webSessionDescription = m_peerHandler->localDescription();
     if (webSessionDescription.isNull())
         return nullptr;
 
     return RTCSessionDescription::create(webSessionDescription);
 }
 
 void RTCPeerConnection::setRemoteDescription(RTCSessionDescription* sessionDescription, VoidCallback* successCallback, RTCErrorCallback* errorCallback, ExceptionState& exceptionState)
 {
     if (throwExceptionIfSignalingStateClosed(m_signalingState, exceptionState))
         return;
 
     if (!sessionDescription) {
         exceptionState.throwDOMException(TypeMismatchError, ExceptionMessages::argumentNullOrIncorrectType(1, "RTCSessionDescription"));
         return;
     }
 
     RTCVoidRequest* request = RTCVoidRequestImpl::create(executionContext(), this, successCallback, errorCallback);
     m_peerHandler->setRemoteDescription(request, sessionDescription->webSessionDescription());
 }
 
-RTCSessionDescription* RTCPeerConnection::remoteDescription(ExceptionState& exceptionState)
+RTCSessionDescription* RTCPeerConnection::remoteDescription()
 {
     WebRTCSessionDescription webSessionDescription = m_peerHandler->remoteDescription();
     if (webSessionDescription.isNull())
         return nullptr;
 
     return RTCSessionDescription::create(webSessionDescription);
 }
 
 void RTCPeerConnection::updateIce(const Dictionary& rtcConfiguration, const Dictionary& mediaConstraints, ExceptionState& exceptionState)
 {
@@ skipping 449 matching lines @@
 {
     visitor->trace(m_localStreams);
     visitor->trace(m_remoteStreams);
     visitor->trace(m_dataChannels);
     visitor->trace(m_scheduledEvents);
     RefCountedGarbageCollectedEventTargetWithInlineData<RTCPeerConnection>::trace(visitor);
     ActiveDOMObject::trace(visitor);
 }
 
 } // namespace blink