Add AIA fetching feature info to certificate reports

components/certificate_reporting/cert_logger.proto

Index: components/certificate_reporting/cert_logger.proto
diff --git a/components/certificate_reporting/cert_logger.proto b/components/certificate_reporting/cert_logger.proto
index e049841408afec43bdedcd97b1fa2da8dc23edb9..811d918a323c53f897060e02199934440d9534b6 100644
--- a/components/certificate_reporting/cert_logger.proto
+++ b/components/certificate_reporting/cert_logger.proto
@@ -67,6 +67,21 @@ message CertLoggerFeaturesInfo {
   }
 
   optional NetworkTimeQueryingInfo network_time_querying_info = 1;
+
+  // Records whether the Android AIA fetching feature is enabled.
+  //
+  // This is an enum rather than a boolean as a convenience to
+  // distinguish reports where fetching is disabled from reports that
+  // were sent before this field was present. (In other words, if it
+  // were a boolean, a value of false might mean that fetching was
+  // disabled, or it might mean that the browser version was older than
+  // when this field was added.)
+  enum AndroidAIAFetchingStatus {
+    ANDROID_AIA_FETCHING_UNKNOWN = 0;
+    ANDROID_AIA_FETCHING_ENABLED = 1;
+    ANDROID_AIA_FETCHING_DISABLED = 2;
+  }
+  optional AndroidAIAFetchingStatus android_aia_fetching_status = 2;
 }
 
 message CertLoggerRequest {