Introduce RequestWebSocketStream into HttpStreamFactory

net/socket/client_socket_pool_manager.h

Index: net/socket/client_socket_pool_manager.h
diff --git a/net/socket/client_socket_pool_manager.h b/net/socket/client_socket_pool_manager.h
index 434a463b7e4688cdcba3d0650c6cf1b3b3422312..a514d25724eaf9d71bcb3d3d1e2cd55a89e07459 100644
--- a/net/socket/client_socket_pool_manager.h
+++ b/net/socket/client_socket_pool_manager.h
@@ -108,6 +108,31 @@ int InitSocketHandleForHttpRequest(
 
 // A helper method that uses the passed in proxy information to initialize a
 // ClientSocketHandle with the relevant socket pool. Use this method for
+// HTTP/HTTPS requests for WebSocket handshake.
+// |ssl_config_for_origin| is only used if the request
+// uses SSL and |ssl_config_for_proxy| is used if the proxy server is HTTPS.
+// |resolution_callback| will be invoked after the the hostname is
+// resolved.  If |resolution_callback| does not return OK, then the
+// connection will be aborted with that value.
+int InitSocketHandleForWebSocketRequest(
+    const GURL& request_url,
+    const HttpRequestHeaders& request_extra_headers,
+    int request_load_flags,
+    RequestPriority request_priority,
+    HttpNetworkSession* session,
+    const ProxyInfo& proxy_info,
+    bool force_spdy_over_ssl,
+    bool want_spdy_over_npn,
+    const SSLConfig& ssl_config_for_origin,
+    const SSLConfig& ssl_config_for_proxy,
+    PrivacyMode privacy_mode,
+    const BoundNetLog& net_log,
+    ClientSocketHandle* socket_handle,
+    const OnHostResolutionCallback& resolution_callback,
+    const CompletionCallback& callback);
+
+// A helper method that uses the passed in proxy information to initialize a
+// ClientSocketHandle with the relevant socket pool. Use this method for
 // a raw socket connection to a host-port pair (that needs to tunnel through
 // the proxies).
 NET_EXPORT int InitSocketHandleForRawConnect(