net: Cleanup class/struct forward declarations

net/websockets/websocket_deflate_stream.h

 // Copyright 2013 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 NET_WEBSOCKETS_WEBSOCKET_DEFLATE_STREAM_H_
 #define NET_WEBSOCKETS_WEBSOCKET_DEFLATE_STREAM_H_
 
 #include <stddef.h>
 
 #include <memory>
 #include <string>
 #include <vector>
 
 #include "base/macros.h"
 #include "net/base/completion_callback.h"
 #include "net/base/net_export.h"
 #include "net/websockets/websocket_deflater.h"
 #include "net/websockets/websocket_frame.h"
 #include "net/websockets/websocket_inflater.h"
 #include "net/websockets/websocket_stream.h"
 
-class GURL;
-
 namespace net {
 
 class WebSocketDeflateParameters;
 class WebSocketDeflatePredictor;
 
 // WebSocketDeflateStream is a WebSocketStream subclass.
 // WebSocketDeflateStream is for permessage-deflate WebSocket extension[1].
 //
 // WebSocketDeflateStream::ReadFrames and WriteFrames may change frame
 // boundary. In particular, if a control frame is placed in the middle of
@@ skipping 68 matching lines @@
   WebSocketFrameHeader::OpCode current_reading_opcode_;
   WebSocketFrameHeader::OpCode current_writing_opcode_;
   std::unique_ptr<WebSocketDeflatePredictor> predictor_;
 
   DISALLOW_COPY_AND_ASSIGN(WebSocketDeflateStream);
 };
 
 }  // namespace net
 
 #endif  // NET_WEBSOCKETS_WEBSOCKET_DEFLATE_STREAM_H_