[WebSocket] Make subprotocol and extensions live in WebSocket

Source/modules/websockets/WebSocketChannel.h

 /*
  * Copyright (C) 2009 Google Inc.  All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 63 matching lines @@
         CloseEventCodePolicyViolation = 1008,
         CloseEventCodeMessageTooBig = 1009,
         CloseEventCodeMandatoryExt = 1010,
         CloseEventCodeInternalError = 1011,
         CloseEventCodeTLSHandshake = 1015,
         CloseEventCodeMinimumUserDefined = 3000,
         CloseEventCodeMaximumUserDefined = 4999
     };
 
     virtual bool connect(const KURL&, const String& protocol) = 0;
-    virtual String subprotocol() = 0; // Will be available after didConnect() callback is invoked.
-    virtual String extensions() = 0; // Will be available after didConnect() callback is invoked.
     virtual SendResult send(const String& message) = 0;
     virtual SendResult send(const ArrayBuffer&, unsigned byteOffset, unsigned byteLength) = 0;
     virtual SendResult send(PassRefPtr<BlobDataHandle>) = 0;
 
     // For WorkerThreadableWebSocketChannel.
     virtual SendResult send(PassOwnPtr<Vector<char> >) = 0;
 
     virtual unsigned long bufferedAmount() const = 0;
     virtual void close(int code, const String& reason) = 0;
 
@@ skipping 16 matching lines @@
     virtual void resume() = 0;
 
     virtual ~WebSocketChannel() { }
 
     virtual void trace(Visitor*) { }
 };
 
 } // namespace WebCore
 
 #endif // WebSocketChannel_h