RTCPeerConnection: remove redundant throwing for callback args.

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 198 matching lines @@
 RTCPeerConnection::~RTCPeerConnection()
 {
     stop();
 }
 
 void RTCPeerConnection::createOffer(PassOwnPtr<RTCSessionDescriptionCallback> successCallback, PassOwnPtr<RTCErrorCallback> errorCallback, const Dictionary& mediaConstraints, ExceptionState& exceptionState)
 {
     if (throwExceptionIfSignalingStateClosed(m_signalingState, exceptionState))
         return;
 
-    if (!successCallback) {
-        exceptionState.throwDOMException(TypeMismatchError, ExceptionMessages::argumentNullOrIncorrectType(1, "RTCSessionDescriptionCallback"));
-        return;
-    }
+    ASSERT(successCallback);
 
     blink::WebMediaConstraints constraints = MediaConstraintsImpl::create(mediaConstraints, exceptionState);
     if (exceptionState.hadException())
         return;
 
     RefPtr<RTCSessionDescriptionRequest> request = RTCSessionDescriptionRequestImpl::create(executionContext(), successCallback, errorCallback);
     m_peerHandler->createOffer(request.release(), constraints);
 }
 
 void RTCPeerConnection::createAnswer(PassOwnPtr<RTCSessionDescriptionCallback> successCallback, PassOwnPtr<RTCErrorCallback> errorCallback, const Dictionary& mediaConstraints, ExceptionState& exceptionState)
 {
     if (throwExceptionIfSignalingStateClosed(m_signalingState, exceptionState))
         return;
 
-    if (!successCallback) {
-        exceptionState.throwDOMException(TypeMismatchError, ExceptionMessages::argumentNullOrIncorrectType(1, "RTCSessionDescriptionCallback"));
-        return;
-    }
+    ASSERT(successCallback);
 
     blink::WebMediaConstraints constraints = MediaConstraintsImpl::create(mediaConstraints, exceptionState);
     if (exceptionState.hadException())
         return;
 
     RefPtr<RTCSessionDescriptionRequest> request = RTCSessionDescriptionRequestImpl::create(executionContext(), successCallback, errorCallback);
     m_peerHandler->createAnswer(request.release(), constraints);
 }
 
 void RTCPeerConnection::setLocalDescription(PassRefPtr<RTCSessionDescription> prpSessionDescription, PassOwnPtr<VoidCallback> successCallback, PassOwnPtr<RTCErrorCallback> errorCallback, ExceptionState& exceptionState)
@@ skipping 81 matching lines @@
 
 void RTCPeerConnection::addIceCandidate(RTCIceCandidate* iceCandidate, PassOwnPtr<VoidCallback> successCallback, PassOwnPtr<RTCErrorCallback> errorCallback, ExceptionState& exceptionState)
 {
     if (throwExceptionIfSignalingStateClosed(m_signalingState, exceptionState))
         return;
 
     if (!iceCandidate) {
         exceptionState.throwDOMException(TypeMismatchError, ExceptionMessages::argumentNullOrIncorrectType(1, "RTCIceCandidate"));
         return;
     }
-    if (!successCallback) {
-        exceptionState.throwDOMException(TypeMismatchError, ExceptionMessages::argumentNullOrIncorrectType(2, "Function"));
-        return;
-    }
-    if (!errorCallback) {
-        exceptionState.throwDOMException(TypeMismatchError, ExceptionMessages::argumentNullOrIncorrectType(3, "RTCErrorCallback"));
-        return;
-    }
+    ASSERT(successCallback);
+    ASSERT(errorCallback);
 
     RefPtr<RTCVoidRequest> request = RTCVoidRequestImpl::create(executionContext(), successCallback, errorCallback);
 
     bool implemented = m_peerHandler->addICECandidate(request.release(), iceCandidate->webCandidate());
     if (!implemented)
         exceptionState.throwDOMException(NotSupportedError, "This method is not yet implemented.");
 }
 
 String RTCPeerConnection::signalingState() const
 {
@@ skipping 357 matching lines @@
     events.swap(m_scheduledEvents);
 
     Vector<RefPtr<Event> >::iterator it = events.begin();
     for (; it != events.end(); ++it)
         dispatchEvent((*it).release());
 
     events.clear();
 }
 
 } // namespace WebCore