Introduce WebSocketDeflateParameters.

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 <string>
 
 #include "base/basictypes.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/scoped_vector.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
 // data message frames, the control frame can overtake data frames.
 // Say there are frames df1, df2 and cf, df1 and df2 are frames of a
 // data message and cf is a control message frame. cf may arrive first and
 // data frames may follow cf.
 // Note that message boundary will be preserved, i.e. if the last frame of
 // a message m1 is read / written before the last frame of a message m2,
 // WebSocketDeflateStream will respect the order.
 //
 // [1]: http://tools.ietf.org/html/draft-ietf-hybi-permessage-compression-12
 class NET_EXPORT_PRIVATE WebSocketDeflateStream : public WebSocketStream {
  public:
   WebSocketDeflateStream(scoped_ptr<WebSocketStream> stream,
-                         WebSocketDeflater::ContextTakeOverMode mode,
-                         int client_window_bits,
+                         const WebSocketDeflateParameters& params,
                          scoped_ptr<WebSocketDeflatePredictor> predictor);
   ~WebSocketDeflateStream() override;
 
   // WebSocketStream functions.
   int ReadFrames(ScopedVector<WebSocketFrame>* frames,
                  const CompletionCallback& callback) override;
   int WriteFrames(ScopedVector<WebSocketFrame>* frames,
                   const CompletionCallback& callback) override;
   void Close() override;
   std::string GetSubProtocol() const override;
@@ skipping 41 matching lines @@
   WebSocketFrameHeader::OpCode current_reading_opcode_;
   WebSocketFrameHeader::OpCode current_writing_opcode_;
   scoped_ptr<WebSocketDeflatePredictor> predictor_;
 
   DISALLOW_COPY_AND_ASSIGN(WebSocketDeflateStream);
 };
 
 }  // namespace net
 
 #endif  // NET_WEBSOCKETS_WEBSOCKET_DEFLATE_STREAM_H_