Extending the translation from ONC to Shill.

chromeos/network/onc/onc_certificate_importer.h

Index: chromeos/network/onc/onc_certificate_importer.h
diff --git a/chromeos/network/onc/onc_certificate_importer.h b/chromeos/network/onc/onc_certificate_importer.h
index bb64f81abe0732a068e6b1d69f288d97ff42fc83..ef765acbbe3fd16fae4f18602a7172367f89b2b6 100644
--- a/chromeos/network/onc/onc_certificate_importer.h
+++ b/chromeos/network/onc/onc_certificate_importer.h
@@ -62,6 +62,10 @@ class CHROMEOS_EXPORT CertificateImporter {
   static void ListCertsWithNickname(const std::string& label,
                                     net::CertificateList* result);
 
+  // Find the PKCS#11 ID of the certificate with the given GUID. Returns an
+  // empty string on failure.
+  static std::string GetPkcs11IdFromCertGuid(const std::string& guid);
+
  protected:
   // Deletes any certificate that has the string |label| as its nickname (exact
   // match).