Revert of Fix issue of localDescription and remoteDescription getter.

Source/modules/mediastream/RTCVoidRequestImpl.h

Index: Source/modules/mediastream/RTCVoidRequestImpl.h
diff --git a/Source/modules/mediastream/RTCVoidRequestImpl.h b/Source/modules/mediastream/RTCVoidRequestImpl.h
index de093092efbc0caf7adf760f2f77281dadf394c4..de20831d6d7aa9970615e34aee4dc07ef724692b 100644
--- a/Source/modules/mediastream/RTCVoidRequestImpl.h
+++ b/Source/modules/mediastream/RTCVoidRequestImpl.h
@@ -44,12 +44,7 @@
 class RTCVoidRequestImpl final : public RTCVoidRequest, public ActiveDOMObject {
     WILL_BE_USING_GARBAGE_COLLECTED_MIXIN(RTCVoidRequestImpl);
 public:
-    enum RequestType {
-        RequestTypeNone,
-        RequestTypeLocal,
-        RequestTypeRemote
-    };
-    static RTCVoidRequestImpl* create(ExecutionContext*, RTCPeerConnection*, VoidCallback*, RTCErrorCallback*, RequestType);
+    static RTCVoidRequestImpl* create(ExecutionContext*, RTCPeerConnection*, VoidCallback*, RTCErrorCallback*);
     virtual ~RTCVoidRequestImpl();
 
     // RTCVoidRequest
@@ -62,14 +57,13 @@
     DECLARE_VIRTUAL_TRACE();
 
 private:
-    RTCVoidRequestImpl(ExecutionContext*, RTCPeerConnection*, VoidCallback*, RTCErrorCallback*, RequestType);
+    RTCVoidRequestImpl(ExecutionContext*, RTCPeerConnection*, VoidCallback*, RTCErrorCallback*);
 
     void clear();
 
     Member<VoidCallback> m_successCallback;
     Member<RTCErrorCallback> m_errorCallback;
     Member<RTCPeerConnection> m_requester;
-    RequestType m_requestType;
 };
 
 } // namespace blink