Change histogram.h includes to histogram_macros.h in components/

components/error_page/common/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 "components/error_page/common/net_error_info.h"
 
 #include "base/logging.h"
-#include "base/metrics/histogram.h"
+#include "base/metrics/histogram_macros.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:
@@ skipping 18 matching lines @@
   return status >= DNS_PROBE_FINISHED_INCONCLUSIVE &&
          status < DNS_PROBE_MAX;
 }
 
 void RecordEvent(NetworkErrorPageEvent event) {
   UMA_HISTOGRAM_ENUMERATION("Net.ErrorPageCounts", event,
                             NETWORK_ERROR_PAGE_EVENT_MAX);
 }
 
 }  // namespace chrome_common_net