Make sure we process all pending offer/answer requests before terminating.

talk/app/webrtc/webrtcsessiondescriptionfactory.h

 /*
  * libjingle
  * Copyright 2013 Google Inc.
  *
  * 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 notice,
@@ skipping 115 matching lines @@
     IDENTITY_WAITING,
     IDENTITY_SUCCEEDED,
     IDENTITY_FAILED,
   };
 
   // MessageHandler implementation.
   virtual void OnMessage(rtc::Message* msg);
 
   void InternalCreateOffer(CreateSessionDescriptionRequest request);
   void InternalCreateAnswer(CreateSessionDescriptionRequest request);
+  // Posts failure notifications for all pending session description requests.
+  void FailPendingRequests(const std::string& reason);
   void PostCreateSessionDescriptionFailed(
       CreateSessionDescriptionObserver* observer,
       const std::string& error);
   void PostCreateSessionDescriptionSucceeded(
       CreateSessionDescriptionObserver* observer,
       SessionDescriptionInterface* description);
 
   void OnIdentityRequestFailed(int error);
   void SetIdentity(rtc::SSLIdentity* identity);
 
   std::queue<CreateSessionDescriptionRequest>
       create_session_description_requests_;
-  rtc::Thread* signaling_thread_;
-  MediaStreamSignaling* mediastream_signaling_;
+  rtc::Thread* const signaling_thread_;
+  MediaStreamSignaling* const mediastream_signaling_;
   cricket::TransportDescriptionFactory transport_desc_factory_;
   cricket::MediaSessionDescriptionFactory session_desc_factory_;
   uint64 session_version_;
   rtc::scoped_ptr<DTLSIdentityServiceInterface> identity_service_;
-  rtc::scoped_refptr<WebRtcIdentityRequestObserver>
-      identity_request_observer_;
-  WebRtcSession* session_;
-  std::string session_id_;
-  cricket::DataChannelType data_channel_type_;
+  rtc::scoped_refptr<WebRtcIdentityRequestObserver> identity_request_observer_;
+  WebRtcSession* const session_;
+  const std::string session_id_;
+  const cricket::DataChannelType data_channel_type_;
   IdentityRequestState identity_request_state_;
 
   DISALLOW_COPY_AND_ASSIGN(WebRtcSessionDescriptionFactory);
 };
 }  // namespace webrtc
 
 #endif  // TALK_APP_WEBRTC_WEBRTCSESSIONDESCRIPTIONFACTORY_H_