Revert of Fix issue of localDescription and remoteDescription getter.

Source/modules/mediastream/RTCPeerConnection.h

Index: Source/modules/mediastream/RTCPeerConnection.h
diff --git a/Source/modules/mediastream/RTCPeerConnection.h b/Source/modules/mediastream/RTCPeerConnection.h
index d3241a6db501311dfc8219a3c5087f44c463781a..bf040004b0b42800cbc8daa0bbb574c116439bfa 100644
--- a/Source/modules/mediastream/RTCPeerConnection.h
+++ b/Source/modules/mediastream/RTCPeerConnection.h
@@ -36,7 +36,6 @@
 #include "modules/EventTargetModules.h"
 #include "modules/mediastream/MediaStream.h"
 #include "modules/mediastream/RTCIceCandidate.h"
-#include "modules/mediastream/RTCVoidRequestImpl.h"
 #include "platform/AsyncMethodRunner.h"
 #include "public/platform/WebMediaConstraints.h"
 #include "public/platform/WebRTCPeerConnectionHandler.h"
@@ -72,10 +71,10 @@
     void createAnswer(RTCSessionDescriptionCallback*, RTCErrorCallback*, const Dictionary&, ExceptionState&);
 
     void setLocalDescription(RTCSessionDescription*, VoidCallback*, RTCErrorCallback*, ExceptionState&);
-    RTCSessionDescription* localDescription();
+    RTCSessionDescription* localDescription(ExceptionState&);
 
     void setRemoteDescription(RTCSessionDescription*, VoidCallback*, RTCErrorCallback*, ExceptionState&);
-    RTCSessionDescription* remoteDescription();
+    RTCSessionDescription* remoteDescription(ExceptionState&);
 
     String signalingState() const;
 
@@ -111,7 +110,6 @@
     // We allow getStats after close, but not other calls or callbacks.
     bool shouldFireDefaultCallbacks() { return !m_closed && !m_stopped; }
     bool shouldFireGetStatsCallback() { return !m_stopped; }
-    void requestSucceeded(RTCVoidRequestImpl::RequestType);
 
     DEFINE_ATTRIBUTE_EVENT_LISTENER(negotiationneeded);
     DEFINE_ATTRIBUTE_EVENT_LISTENER(icecandidate);
@@ -166,14 +164,6 @@
 
     void closeInternal();
 
-    void commitPendingLocalSessionDescription();
-    void commitPendingRemoteSessionDescription();
-
-    Member<RTCSessionDescription> m_localDescription;
-    Member<RTCSessionDescription> m_remoteDescription;
-    Member<RTCSessionDescription> m_pendingLocalDescription;
-    Member<RTCSessionDescription> m_pendingRemoteDescription;
-
     SignalingState m_signalingState;
     ICEGatheringState m_iceGatheringState;
     ICEConnectionState m_iceConnectionState;