Update chromedp to fix console errors (#1521)

vendor/github.com/gobwas/ws/doc.go

@@ -0,0 +1,81 @@
+/*
+Package ws implements a client and server for the WebSocket protocol as
+specified in RFC 6455.
+
+The main purpose of this package is to provide simple low-level API for
+efficient work with protocol.
+
+Overview.
+
+Upgrade to WebSocket (or WebSocket handshake) can be done in two ways.
+
+The first way is to use `net/http` server:
+
+  http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
+	  conn, _, _, err := ws.UpgradeHTTP(r, w)
+  })
+
+The second and much more efficient way is so-called "zero-copy upgrade". It
+avoids redundant allocations and copying of not used headers or other request
+data. User decides by himself which data should be copied.
+
+  ln, err := net.Listen("tcp", ":8080")
+  if err != nil {
+	  // handle error
+  }
+
+  conn, err := ln.Accept()
+  if err != nil {
+	  // handle error
+  }
+
+  handshake, err := ws.Upgrade(conn)
+  if err != nil {
+	  // handle error
+  }
+
+For customization details see `ws.Upgrader` documentation.
+
+After WebSocket handshake you can work with connection in multiple ways.
+That is, `ws` does not force the only one way of how to work with WebSocket:
+
+  header, err := ws.ReadHeader(conn)
+  if err != nil {
+	  // handle err
+  }
+
+  buf := make([]byte, header.Length)
+  _, err := io.ReadFull(conn, buf)
+  if err != nil {
+	  // handle err
+  }
+
+  resp := ws.NewBinaryFrame([]byte("hello, world!"))
+  if err := ws.WriteFrame(conn, frame); err != nil {
+      // handle err
+  }
+
+As you can see, it stream friendly:
+
+  const N = 42
+
+  ws.WriteHeader(ws.Header{
+	  Fin:    true,
+	  Length: N,
+	  OpCode: ws.OpBinary,
+  })
+
+  io.CopyN(conn, rand.Reader, N)
+
+Or:
+
+  header, err := ws.ReadHeader(conn)
+  if err != nil {
+	  // handle err
+  }
+
+  io.CopyN(ioutil.Discard, conn, header.Length)
+
+For more info see the documentation.
+*/
+package ws