Implement current/pending session description methods.

webrtc/api/peerconnectionproxy.h

 /*
  *  Copyright 2012 The WebRTC project authors. All Rights Reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
@@ skipping 29 matching lines @@
   PROXY_CONSTMETHOD0(std::vector<rtc::scoped_refptr<RtpReceiverInterface>>,
                      GetReceivers)
   PROXY_METHOD3(bool, GetStats, StatsObserver*,
                 MediaStreamTrackInterface*,
                 StatsOutputLevel)
   PROXY_METHOD1(void, GetStats, RTCStatsCollectorCallback*)
   PROXY_METHOD2(rtc::scoped_refptr<DataChannelInterface>,
                 CreateDataChannel, const std::string&, const DataChannelInit*)
   PROXY_CONSTMETHOD0(const SessionDescriptionInterface*, local_description)
   PROXY_CONSTMETHOD0(const SessionDescriptionInterface*, remote_description)
+  PROXY_CONSTMETHOD0(const SessionDescriptionInterface*,
+                     pending_local_description)
+  PROXY_CONSTMETHOD0(const SessionDescriptionInterface*,
+                     pending_remote_description)
+  PROXY_CONSTMETHOD0(const SessionDescriptionInterface*,
+                     current_local_description)
+  PROXY_CONSTMETHOD0(const SessionDescriptionInterface*,
+                     current_remote_description)
   PROXY_METHOD2(void, CreateOffer, CreateSessionDescriptionObserver*,
                 const MediaConstraintsInterface*)
   PROXY_METHOD2(void, CreateAnswer, CreateSessionDescriptionObserver*,
                 const MediaConstraintsInterface*)
   PROXY_METHOD2(void,
                 CreateOffer,
                 CreateSessionDescriptionObserver*,
                 const RTCOfferAnswerOptions&)
   PROXY_METHOD2(void,
                 CreateAnswer,
@@ skipping 16 matching lines @@
   PROXY_METHOD0(IceConnectionState, ice_connection_state)
   PROXY_METHOD0(IceGatheringState, ice_gathering_state)
   PROXY_METHOD2(bool, StartRtcEventLog, rtc::PlatformFile, int64_t)
   PROXY_METHOD0(void, StopRtcEventLog)
   PROXY_METHOD0(void, Close)
 END_SIGNALING_PROXY()
 
 }  // namespace webrtc
 
 #endif  // WEBRTC_API_PEERCONNECTIONPROXY_H_