Introduce RequestWebSocketStream into HttpStreamFactory

net/http/websocket_stream_base.h

+// Copyright (c) 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_HTTP_WEBSOCKET_STREAM_BASE_H_
+#define NET_HTTP_WEBSOCKET_STREAM_BASE_H_
+
+// This file is placed on net/http because net/http classes depends it.
+// Since net/http can be built without linking net/websockets code,
+// you should not introduce dependency to net/websockets in this file.
+
+#include <base/basictypes.h>
+
+namespace net {
+
+class ClientSocketHandle;
+class SpdySession;
+
+// WebSocketStreamBase is the base class of WebSocketStream.
+// net/http code can hold WebSocketStream objects via this interface
+// without linking net/websockets code.
+class WebSocketStreamBase {
+ public:
+  // The enum describing the stream type.
+  // Each type corresponds to a WebSocketStream derived class.
+  enum StreamType {
+    // correspond to WebSocketBasicStream
+    kStreamTypeBasic,
+    // correspond to WebSockeSpdyStream
+    kStreamTypeSpdy,
+    // for testing purpose
+    kStreamTypeTest
+  };
+
+  // You can derive this class and implement each factory method.
+  class Factory {
+   public:
+    // Create a WebSocketBasicStream.
+    // This function (or the returned object) takes the ownership
+    // of |connection|.
+    virtual WebSocketStreamBase* CreateBasicStream(
+        ClientSocketHandle* connection,
+        bool using_proxy) = 0;
+
+    // Create a WebSocketSpdyStream.
+    virtual WebSocketStreamBase* CreateSpdyStream(
+        SpdySession* session,
+        bool use_relative_url) = 0;
+
+    virtual ~Factory() {}
+  };
+
+  StreamType type() const {
+    return type_;
+  }
+
+  virtual ~WebSocketStreamBase() { }
+
+ protected:
+  explicit WebSocketStreamBase(StreamType type): type_(type) {}
+
+ private:
+  const StreamType type_;
+  DISALLOW_COPY_AND_ASSIGN(WebSocketStreamBase);
+};
+
+}  // namespace net
+
+#endif  // NET_HTTP_WEBSOCKET_STREAM_BASE_H_