Revert of Use standard ICE in Chromoting.

remoting/protocol/content_description.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef REMOTING_PROTOCOL_CONTENT_DESCRIPTION_H_
 #define REMOTING_PROTOCOL_CONTENT_DESCRIPTION_H_
 
 #include <string>
 
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
 #include "remoting/protocol/session_config.h"
+#include "third_party/webrtc/p2p/base/sessiondescription.h"
 
 namespace buzz {
 class XmlElement;
 }  // namespace buzz
 
 namespace remoting {
 namespace protocol {
 
 // ContentDescription used for chromoting sessions. It contains the information
 // from the content description stanza in the session intialization handshake.
 //
 // This class also provides a type abstraction so that the Chromotocol Session
 // interface does not need to depend on libjingle.
-class ContentDescription {
+class ContentDescription : public cricket::ContentDescription {
  public:
   static const char kChromotingContentName[];
 
   ContentDescription(scoped_ptr<CandidateSessionConfig> config,
                      scoped_ptr<buzz::XmlElement> authenticator_message);
-  ~ContentDescription();
+  ~ContentDescription() override;
+
+  ContentDescription* Copy() const override;
 
   const CandidateSessionConfig* config() const {
     return candidate_config_.get();
   }
 
   const buzz::XmlElement* authenticator_message() const {
     return authenticator_message_.get();
   }
 
   buzz::XmlElement* ToXml() const;
 
   static scoped_ptr<ContentDescription> ParseXml(
       const buzz::XmlElement* element);
 
  private:
   scoped_ptr<const CandidateSessionConfig> candidate_config_;
   scoped_ptr<const buzz::XmlElement> authenticator_message_;
 
   static bool ParseChannelConfigs(const buzz::XmlElement* const element,
                                   const char tag_name[],
                                   bool codec_required,
                                   bool optional,
                                   std::list<ChannelConfig>* const configs);
 };
 
 }  // namespace protocol
 }  // namespace remoting
 
 #endif  // REMOTING_PROTOCOL_CONTENT_DESCRIPTION_H_