Surface button for loading stale cache copy on net error page.

chrome/common/net/net_error_info.cc

 // 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 "base/logging.h"
+#include "base/metrics/histogram.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";
@@ skipping 13 matching lines @@
     NOTREACHED();
     return "";
   }
 }
 
 bool DnsProbeStatusIsFinished(DnsProbeStatus status) {
   return status >= DNS_PROBE_FINISHED_INCONCLUSIVE &&
          status < DNS_PROBE_MAX;
 }
 
+void RecordEvent(NetworkErrorPageEvent event) {
+  UMA_HISTOGRAM_ENUMERATION("Net.ErrorPageCounts", event,

[jar (doing other things), 2014/04/21 23:48:19]

Please add an entry in tools/metrics/histograms/histograms.xml for this (as part
of this CL).

[Randy Smith (Not in Mondays), 2014/04/22 20:40:02]

Apologies; as noted elsewhere, I was confused about the fact that we still had a
public histograms repository.  

+                            NETWORK_ERROR_PAGE_EVENT_MAX);
+}
+
 }  // namespace chrome_common_net