Factor out Sec-WebSocket-Accept computing logic so that the new WebSocket handshake processor can r…

net/websockets/websocket_handshake_handler.h

Index: net/websockets/websocket_handshake_handler.h
diff --git a/net/websockets/websocket_handshake_handler.h b/net/websockets/websocket_handshake_handler.h
index ee3749f50b94eb9502e9b5d5015b1ec980db9cff..73af66d0aaa2716c96d2445ef00f6948fc7e420e 100644
--- a/net/websockets/websocket_handshake_handler.h
+++ b/net/websockets/websocket_handshake_handler.h
@@ -23,6 +23,9 @@
 
 namespace net {
 
+void ComputeSecWebSocketAccept(const std::string& key,
+                               std::string* accept);
+
 class NET_EXPORT_PRIVATE WebSocketHandshakeRequestHandler {
  public:
   WebSocketHandshakeRequestHandler();