Display DNS probe results.

chrome/common/net/net_error_info.cc

+// Copyright (c) 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 "base/logging.h"
+#include "base/metrics/field_trial.h"
+#include "chrome/common/net/net_error_info.h"
+
+namespace chrome_common_net {
+
+const char kDnsProbeErrorDomain[] = "dnsprobe";
+
+const char* DnsProbeStatusToString(int status) {
+  switch (status) {
+  case DNS_PROBE_POSSIBLE:
+    return "DNS_PROBE_POSSIBLE";
+  case DNS_PROBE_NOT_RUN:
+    return "DNS_PROBE_NOT_RUN";
+  case DNS_PROBE_STARTED:
+    return "DNS_PROBE_STARTED";
+  case DNS_PROBE_FINISHED_UNKNOWN:
+    return "DNS_PROBE_FINISHED_UNKNOWN";
+  case DNS_PROBE_FINISHED_NO_INTERNET:
+    return "DNS_PROBE_FINISHED_NO_INTERNET";
+  case DNS_PROBE_FINISHED_BAD_CONFIG:
+    return "DNS_PROBE_FINISHED_BAD_CONFIG";
+  case DNS_PROBE_FINISHED_NXDOMAIN:
+    return "DNS_PROBE_FINISHED_NXDOMAIN";
+  default:
+    NOTREACHED();
+    return "";
+  }
+}
+
+bool DnsProbeStatusIsFinished(DnsProbeStatus status) {
+  return status >= DNS_PROBE_FINISHED_UNKNOWN &&
+         status < DNS_PROBE_MAX;
+}
+
+bool DnsProbesEnabledByFieldTrial() {
+  const char kDnsProbeFieldTrialName[] = "DnsProbe-Enable";
+  const char kDnsProbeFieldTrialEnableGroupName[] = "enable";
+
+  return base::FieldTrialList::FindFullName(kDnsProbeFieldTrialName) ==
+         kDnsProbeFieldTrialEnableGroupName;
+}
+
+}  // namespace chrome_common_net