Reland of: Adding error output param to SetConfiguration, using new RTCError type.

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 54 matching lines @@
                 const RTCOfferAnswerOptions&)
   PROXY_METHOD2(void,
                 CreateAnswer,
                 CreateSessionDescriptionObserver*,
                 const RTCOfferAnswerOptions&)
   PROXY_METHOD2(void, SetLocalDescription, SetSessionDescriptionObserver*,
                 SessionDescriptionInterface*)
   PROXY_METHOD2(void, SetRemoteDescription, SetSessionDescriptionObserver*,
                 SessionDescriptionInterface*)
   PROXY_METHOD0(PeerConnectionInterface::RTCConfiguration, GetConfiguration);
+  PROXY_METHOD2(bool,
+                SetConfiguration,
+                const PeerConnectionInterface::RTCConfiguration&,
+                RTCError*);
   PROXY_METHOD1(bool,
                 SetConfiguration,
                 const PeerConnectionInterface::RTCConfiguration&);
   PROXY_METHOD1(bool, AddIceCandidate, const IceCandidateInterface*)
   PROXY_METHOD1(bool,
                 RemoveIceCandidates,
                 const std::vector<cricket::Candidate>&);
   PROXY_METHOD1(void, RegisterUMAObserver, UMAObserver*)
   PROXY_METHOD0(SignalingState, signaling_state)
   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_