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diff --git a/content/browser/renderer_host/socket_stream_host.h b/content/browser/renderer_host/socket_stream_host.h
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+// Copyright (c) 2011 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 CONTENT_BROWSER_RENDERER_HOST_SOCKET_STREAM_HOST_H_
+#define CONTENT_BROWSER_RENDERER_HOST_SOCKET_STREAM_HOST_H_
+#pragma once
+
+#include <vector>
+
+#include "base/ref_counted.h"
+#include "net/socket_stream/socket_stream.h"
+
+class GURL;
+
+namespace net {
+class SocketStreamJob;
+class URLRequestContext;
+} // namespace net
+
+// Host of SocketStreamHandle.
+// Each SocketStreamHandle will have an unique socket_id assigned by
+// SocketStreamHost constructor. If socket id is chrome_common_net::kNoSocketId,
+// there is no SocketStreamHost.
+// Each SocketStreamHost has SocketStream to manage bi-directional
+// communication over socket stream.
+// The lifetime of an instance of this class is completely controlled by the
+// SocketStreamDispatcherHost.
+class SocketStreamHost {
+ public:
+ SocketStreamHost(net::SocketStream::Delegate* delegate, int socket_id);
+ ~SocketStreamHost();
+
+ // Gets socket_id associated with |socket|.
+ static int SocketIdFromSocketStream(net::SocketStream* socket);
+
+ int socket_id() const { return socket_id_; }
+
+ // Starts to open connection to |url|.
+ void Connect(const GURL& url, net::URLRequestContext* request_context);
+
+ // Sends |data| over the socket stream.
+ // socket stream must be open to send data.
+ // Returns true if the data is put in transmit buffer in socket stream.
+ // Returns false otherwise (transmit buffer exceeds limit, or socket
+ // stream is closed).
+ bool SendData(const std::vector<char>& data);
+
+ // Closes the socket stream.
+ void Close();
+
+ private:
+ net::SocketStream::Delegate* delegate_;
+ int socket_id_;
+
+ scoped_refptr<net::SocketStreamJob> socket_;
+
+ DISALLOW_COPY_AND_ASSIGN(SocketStreamHost);
+};
+
+#endif // CONTENT_BROWSER_RENDERER_HOST_SOCKET_STREAM_HOST_H_