Finished DNS-SD server. Finished Privet-specified DNS-SD server.

cloud_print/gcp20/prototype/dns_txt_builder.cc

Index: cloud_print/gcp20/prototype/dns_txt_builder.cc
diff --git a/cloud_print/gcp20/prototype/dns_txt_builder.cc b/cloud_print/gcp20/prototype/dns_txt_builder.cc
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+// Copyright 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.
+
+#include "cloud_print/gcp20/prototype/dns_txt_builder.h"
+
+#include <string.h>
+
+#include "base/logging.h"
+#include "base/strings/string_piece.h"
+
+DnsTxtBuilder::DnsTxtBuilder() {
+}
+
+DnsTxtBuilder::~DnsTxtBuilder() {
+}
+
+void DnsTxtBuilder::AddRecord(const char* str) {
+  size_t length_ptr = record.size();  // Remember position of length byte.
+  record += '\0';  // Allocate space for length byte.
+  record += str;
+  int len = strlen(str);
+  DCHECK_LT(len, 256);
+  record[length_ptr] = static_cast<char>(len);  // Set length byte.
+}
+
+void DnsTxtBuilder::Build(std::string* out) const {
+  *out = record;
+}
+
+const std::string& DnsTxtBuilder::Build() const {
+  return record;
+}
+