diff --git a/chrome/browser/net/server_certificate_database.h b/chrome/browser/net/server_certificate_database.h
index 09b4309e..cfa0fc2 100644
--- a/chrome/browser/net/server_certificate_database.h
+++ b/chrome/browser/net/server_certificate_database.h
@@ -23,6 +23,9 @@
 class ServerCertificateDatabase {
  public:
   struct CertInformation {
+    // Initializes a CertInformation object with the `der_cert` and calculates
+    // the `sha256hash_hex` from the supplied cert.
+    explicit CertInformation(base::span<const uint8_t> cert);
     CertInformation();
     ~CertInformation();
     CertInformation(CertInformation&&);