text: // Copyright 2018 The Go Authors. All rights reserved.
  // Use of this source code is governed by a BSD-style
  // license that can be found in the LICENSE file.
  
  // +build !go1.11
  
  package http2
  
  import "net/textproto"
  
  func traceHasWroteHeaderField(trace *clientTrace) bool { return false }
  
  func traceWroteHeaderField(trace *clientTrace, k, v string) {}
  
  func traceGot1xxResponseFunc(trace *clientTrace) func(int, textproto.MIMEHeader) error {
  	return nil
  }
  