Parse termination reason and propagate the error to the Session interface.

remoting/protocol/pepper_session.h

Index: remoting/protocol/pepper_session.h
diff --git a/remoting/protocol/pepper_session.h b/remoting/protocol/pepper_session.h
index 99b9f6a0dcd8216b7078c6df9845922048cae7f0..ab0a26d94458eb5282e7568344491eca50b3bfb2 100644
--- a/remoting/protocol/pepper_session.h
+++ b/remoting/protocol/pepper_session.h
@@ -43,22 +43,11 @@ class SocketWrapper;
 // outgoing connections.
 class PepperSession : public Session {
  public:
-  // TODO(sergeyu): Move this type and error() method to the Session
-  // interface.
-  enum Error {
-    ERROR_NO_ERROR = 0,
-    ERROR_PEER_IS_OFFLINE,
-    ERROR_SESSION_REJECTED,
-    ERROR_INCOMPATIBLE_PROTOCOL,
-    ERROR_CHANNEL_CONNECTION_FAILURE,
-  };
-
   virtual ~PepperSession();
 
-  Error error();
-
   // Session interface.
   virtual void SetStateChangeCallback(StateChangeCallback* callback) OVERRIDE;
+  virtual Error error() OVERRIDE;
   virtual void CreateStreamChannel(
       const std::string& name,
       const StreamChannelCallback& callback) OVERRIDE;
@@ -107,7 +96,6 @@ class PepperSession : public Session {
 
   // Message handlers for incoming messages.
   void OnAccept(const JingleMessage& message, JingleMessageReply* reply);
-  void OnReject(const JingleMessage& message, JingleMessageReply* reply);
   void OnTerminate(const JingleMessage& message, JingleMessageReply* reply);
   void ProcessTransportInfo(const JingleMessage& message);