Add experimental feature info to certificate reports

chrome/browser/ssl/cert_report_helper.cc

Index: chrome/browser/ssl/cert_report_helper.cc
diff --git a/chrome/browser/ssl/cert_report_helper.cc b/chrome/browser/ssl/cert_report_helper.cc
index 092984b0e92b14a2a7e60ed211875022d5e462fb..2a43df819e43c22dee5292e618b04e8d57be393f 100644
--- a/chrome/browser/ssl/cert_report_helper.cc
+++ b/chrome/browser/ssl/cert_report_helper.cc
@@ -17,6 +17,7 @@
 #include "chrome/browser/ssl/ssl_cert_reporter.h"
 #include "chrome/common/pref_names.h"
 #include "chrome/grit/generated_resources.h"
+#include "components/network_time/network_time_tracker.h"
 #include "components/prefs/pref_service.h"
 #include "components/safe_browsing_db/safe_browsing_prefs.h"
 #include "components/security_interstitials/core/controller_client.h"
@@ -114,6 +115,19 @@ void CertReportHelper::FinishCertCollection(
           ? certificate_reporting::ErrorReport::INTERSTITIAL_OVERRIDABLE
           : certificate_reporting::ErrorReport::INTERSTITIAL_NOT_OVERRIDABLE);
 
+  // Include information about experimental features relevant to
+  // certificate validation. (At present, this is just network time
+  // querying.)
+  std::map<std::string, std::string> params;
+  params[network_time::kVariationsServiceEnableFetchesOnDemand] =
+      variations::GetVariationParamValueByFeature(
+          network_time::kNetworkTimeServiceQuerying,
+          network_time::kVariationsServiceEnableFetchesOnDemand);
+  report.AddFeature(
+      network_time::kNetworkTimeServiceQuerying.name,
+      base::FeatureList::IsEnabled(network_time::kNetworkTimeServiceQuerying),
+      params);
+
   if (!report.Serialize(&serialized_report)) {
     LOG(ERROR) << "Failed to serialize certificate report.";
     return;