Convert tests that parse an Extension value to instead

net/data/parse_certificate_unittest/extension_critical_3.pem

Index: net/data/parse_certificate_unittest/extension_critical_3.pem
diff --git a/net/data/parse_certificate_unittest/extension_critical_3.pem b/net/data/parse_certificate_unittest/extension_critical_3.pem
index 97b8f08ab48efe2af9606b1b45397758b051f604..c9d904ad1792c4d9245cecf1893c57ce93835417 100644
--- a/net/data/parse_certificate_unittest/extension_critical_3.pem
+++ b/net/data/parse_certificate_unittest/extension_critical_3.pem
@@ -1,14 +1,20 @@
-This is a basic constraints extension, where the critical field (BOOLEAN) is 3.
+This is an unknown extension, where the critical field (BOOLEAN) is 3.
 
 This is not valid because BOOLEANs in DER-encoding should use an octet of
 either all 0 bits or all 1 bits.
 
+#-----BEGIN EXTENSION-----
+SEQUENCE {
+  # https://davidben.net/oid
+  OBJECT_IDENTIFIER { 1.2.840.113554.4.1.72585.0 }
+  BOOLEAN { `03` }
+  OCTET_STRING {
+    SEQUENCE {}
+  }
+}
+#-----END EXTENSION-----
 
-$ openssl asn1parse -i < [EXTENSION]
-    0:d=0  hl=2 l=  12 cons: SEQUENCE          
-    2:d=1  hl=2 l=   3 prim:  OBJECT            :X509v3 Basic Constraints
-    7:d=1  hl=2 l=   1 prim:  BOOLEAN           :3
-   10:d=1  hl=2 l=   2 prim:  OCTET STRING      [HEX DUMP]:3000
------BEGIN EXTENSION-----
-MAwGA1UdEwEBAwQCMAA=
------END EXTENSION-----
+
+-----BEGIN CERTIFICATE-----
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
+-----END CERTIFICATE-----