Add experimental feature info to certificate reports

components/certificate_reporting/error_report_unittest.cc

Index: components/certificate_reporting/error_report_unittest.cc
diff --git a/components/certificate_reporting/error_report_unittest.cc b/components/certificate_reporting/error_report_unittest.cc
index c49b5448a5365ddbf56d91749c003edcd4c5ac48..03a314c66b544ff909556be08514ca439754d50c 100644
--- a/components/certificate_reporting/error_report_unittest.cc
+++ b/components/certificate_reporting/error_report_unittest.cc
@@ -178,6 +178,36 @@ TEST(ErrorReportTest, CertificateTransparencyError) {
       VerifyErrorReportSerialization(report_known, ssl_info, cert_errors));
 }
 
+// Tests that information about relevant features are included in the
+// report.
+TEST(ErrorReportTest, FeatureInfo) {
+  const std::string kFeatureName = "TestFeature";
+  std::map<std::string, std::string> params;
+  params["foo"] = "bar";
+  params["foo2"] = "bar2";
+
+  // Serialize a report containing information about the test feature.
+  SSLInfo ssl_info;
+  ASSERT_NO_FATAL_FAILURE(
+      GetTestSSLInfo(INCLUDE_UNVERIFIED_CERT_CHAIN, &ssl_info, kCertStatus));
+  ErrorReport report(kDummyHostname, ssl_info);
+  report.AddFeature(kFeatureName, true, params);
+  std::string serialized_report;
+  ASSERT_TRUE(report.Serialize(&serialized_report));
+
+  // Check that the report contains the test feature information.
+  CertLoggerRequest parsed;
+  ASSERT_TRUE(parsed.ParseFromString(serialized_report));
+  ASSERT_EQ(1, parsed.features_info().size());
+  EXPECT_EQ(kFeatureName, parsed.features_info(0).feature());
+  EXPECT_TRUE(parsed.features_info(0).enabled());
+  std::map<std::string, std::string> parsed_params;
+  for (const auto& param : parsed.features_info(0).params()) {
+    parsed_params[param.name()] = param.value();
+  }
+  EXPECT_EQ(params, parsed_params);
+}
+
 }  // namespace
 
 }  // namespace certificate_reporting