Add construction of WebSocketDeflateStream

net/websockets/websocket_handshake_stream_create_helper.cc

 // 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.
 
 #include "net/websockets/websocket_handshake_stream_create_helper.h"
 
 #include "base/logging.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/weak_ptr.h"
 #include "net/socket/client_socket_handle.h"
 #include "net/spdy/spdy_session.h"
 #include "net/websockets/websocket_basic_handshake_stream.h"
 
 namespace net {
 
 WebSocketHandshakeStreamCreateHelper::WebSocketHandshakeStreamCreateHelper(
     WebSocketStream::ConnectDelegate* connect_delegate,
     const std::vector<std::string>& requested_subprotocols)
     : requested_subprotocols_(requested_subprotocols),
       stream_(NULL),
       connect_delegate_(connect_delegate) {}
 
 WebSocketHandshakeStreamCreateHelper::~WebSocketHandshakeStreamCreateHelper() {}
 
 WebSocketHandshakeStreamBase*
 WebSocketHandshakeStreamCreateHelper::CreateBasicStream(
     scoped_ptr<ClientSocketHandle> connection,
     bool using_proxy) {
+  // The list of supported extensions and parameters is hard-coded.
+  // TODO(ricea): If more extensions are added, consider a more flexible
+  // method.
+  std::vector<std::string> extensions(
+      1, "permessage-deflate; client_max_window_bits");
   return stream_ =
       new WebSocketBasicHandshakeStream(connection.Pass(),
                                         connect_delegate_,
                                         using_proxy,
                                         requested_subprotocols_,
-                                        std::vector<std::string>());
+                                        extensions);
 }
 
 // TODO(ricea): Create a WebSocketSpdyHandshakeStream. crbug.com/323852
 WebSocketHandshakeStreamBase*
 WebSocketHandshakeStreamCreateHelper::CreateSpdyStream(
     const base::WeakPtr<SpdySession>& session,
     bool use_relative_url) {
   NOTREACHED() << "Not implemented";
   return NULL;
 }
 
 }  // namespace net