Add experimental feature info to certificate reports

components/certificate_reporting/error_report.h

Index: components/certificate_reporting/error_report.h
diff --git a/components/certificate_reporting/error_report.h b/components/certificate_reporting/error_report.h
index 0200dcd4304be9f3230a80a0e4d327c02f46f02d..214fb7eb99bb30320399e0a4085285fed2835a2d 100644
--- a/components/certificate_reporting/error_report.h
+++ b/components/certificate_reporting/error_report.h
@@ -8,6 +8,9 @@
 #include <memory>
 #include <string>
 
+namespace network_time {
+class NetworkTimeTracker;
+}  // namespace network_time
 
 namespace net {
 class SSLInfo;
@@ -61,6 +64,9 @@ class ErrorReport {
                            const ProceedDecision& proceed_decision,
                            const Overridable& overridable);
 
+  void AddNetworkTimeInfo(
+      const network_time::NetworkTimeTracker* network_time_tracker);
+
   // Gets the hostname to which this report corresponds.
   const std::string& hostname() const;