Fix issue of localDescription and remoteDescription getter.

Source/modules/mediastream/RTCVoidRequestImpl.h

 /*
  * 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 26 matching lines @@
 
 namespace blink {
 
 class RTCErrorCallback;
 class RTCPeerConnection;
 class VoidCallback;
 
 class RTCVoidRequestImpl final : public RTCVoidRequest, public ActiveDOMObject {
     WILL_BE_USING_GARBAGE_COLLECTED_MIXIN(RTCVoidRequestImpl);
 public:
-    static RTCVoidRequestImpl* create(ExecutionContext*, RTCPeerConnection*, VoidCallback*, RTCErrorCallback*);
+    enum RequestType {
+        RequestTypeNone,
+        RequestTypeLocal,
+        RequestTypeRemote
+    };
+    static RTCVoidRequestImpl* create(ExecutionContext*, RTCPeerConnection*, VoidCallback*, RTCErrorCallback*, RequestType);
     virtual ~RTCVoidRequestImpl();
 
     // RTCVoidRequest
     virtual void requestSucceeded() override;
     virtual void requestFailed(const String& error) override;
 
     // ActiveDOMObject
     virtual void stop() override;
 
     DECLARE_VIRTUAL_TRACE();
 
 private:
-    RTCVoidRequestImpl(ExecutionContext*, RTCPeerConnection*, VoidCallback*, RTCErrorCallback*);
+    RTCVoidRequestImpl(ExecutionContext*, RTCPeerConnection*, VoidCallback*, RTCErrorCallback*, RequestType);
 
     void clear();
 
     Member<VoidCallback> m_successCallback;
     Member<RTCErrorCallback> m_errorCallback;
     Member<RTCPeerConnection> m_requester;
+    RequestType m_requestType;
 };
 
 } // namespace blink
 
 #endif // RTCVoidRequestImpl_h