Introduce RequestWebSocketStream into HttpStreamFactory

net/websockets/websocket_stream_base.h

Index: net/websockets/websocket_stream_base.h
diff --git a/net/websockets/websocket_stream_base.h b/net/websockets/websocket_stream_base.h
new file mode 100644
index 0000000000000000000000000000000000000000..ee937ad8c05087959c36e7d9a719f13fdd94ecb6
--- /dev/null
+++ b/net/websockets/websocket_stream_base.h
@@ -0,0 +1,55 @@
+// 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_WEBSOCKETS_WEBSOCKET_STREAM_BASE_H_
+#define NET_WEBSOCKETS_WEBSOCKET_STREAM_BASE_H_
+
+// This file is included from net/http files.
+// Since net/http can be built without linking net/websockets code,
+// this file should not depend on net/websockets.
+
+#include <base/basictypes.h>
+
+namespace net {
+
+class ClientSocketHandle;
+class SpdySession;
+class WebSocketStream;
+
+// WebSocketStreamBase is the base class of WebSocketStream.
+// net/http code uses this interface to handle WebSocketStream.
+class WebSocketStreamBase {
+ public:
+  class Factory {
+   public:
+    virtual ~Factory() {}
+
+    // 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 ~WebSocketStreamBase() {}
+
+  // Return this object as a WebSocketStream.
+  virtual WebSocketStream* AsWebSocketStream() = 0;
+
+ protected:
+  WebSocketStreamBase() {}
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(WebSocketStreamBase);
+};
+
+}  // namespace net
+
+#endif  // NET_WEBSOCKETS_WEBSOCKET_STREAM_BASE_H_