X509CertificateBytes: Allow invalid serial numbers for now.

net/data/parse_certificate_unittest/v3_certificate_template.txt

Index: net/data/parse_certificate_unittest/v3_certificate_template.txt
diff --git a/net/data/parse_certificate_unittest/v3_certificate_template.txt b/net/data/parse_certificate_unittest/v3_certificate_template.txt
index 34c31754165ec1e15e602416c97c6c8ba30193cf..4f0b36edb5fc9daee4e129643552682c4abf4123 100644
--- a/net/data/parse_certificate_unittest/v3_certificate_template.txt
+++ b/net/data/parse_certificate_unittest/v3_certificate_template.txt
@@ -10,7 +10,9 @@ SEQUENCE {
     [0] {
       INTEGER { 2 }
     }
+#-----BEGIN SERIAL-----
     INTEGER { `00fbb04c2eab109b0c` }
+#-----END SERIAL-----
     SEQUENCE {
       # sha1WithRSAEncryption
       OBJECT_IDENTIFIER { 1.2.840.113549.1.1.5 }