Refactor how net/data/verify_certificate_chain_unittest/*

net/data/verify_certificate_chain_unittest/intermediate-unknown-non-critical-extension/generate-chains.py

Index: net/data/verify_certificate_chain_unittest/intermediate-unknown-non-critical-extension/generate-chains.py
diff --git a/net/data/verify_certificate_chain_unittest/generate-intermediate-unknown-non-critical-extension.py b/net/data/verify_certificate_chain_unittest/intermediate-unknown-non-critical-extension/generate-chains.py
similarity index 74%
rename from net/data/verify_certificate_chain_unittest/generate-intermediate-unknown-non-critical-extension.py
rename to net/data/verify_certificate_chain_unittest/intermediate-unknown-non-critical-extension/generate-chains.py
index ae4b03d77edb65e37846be288a35d15f8ea6a899..108c9196fe2a9cebbdfdc228ada6318dcbd70084 100755
--- a/net/data/verify_certificate_chain_unittest/generate-intermediate-unknown-non-critical-extension.py
+++ b/net/data/verify_certificate_chain_unittest/intermediate-unknown-non-critical-extension/generate-chains.py
@@ -8,6 +8,9 @@ has an unknown X.509v3 extension that is marked as non-critical. Verification
 is expected to succeed because although unrecognized, the extension is not
 critical."""
 
+import sys
+sys.path += ['..']
+
 import common
 
 # Self-signed root certificate (used as trust anchor).
@@ -20,12 +23,5 @@ intermediate.get_extensions().add_property('1.2.3.4', 'DER:01:02:03:04')
 # Target certificate.
 target = common.create_end_entity_certificate('Target', intermediate)
 
-chain = [target, intermediate]
-trusted = common.TrustAnchor(root, constrained=False)
-time = common.DEFAULT_TIME
-key_purpose = common.DEFAULT_KEY_PURPOSE
-verify_result = True
-errors = None
-
-common.write_test_file(__doc__, chain, trusted, time, key_purpose,
-                       verify_result, errors)
+chain = [target, intermediate, root]
+common.write_chain(__doc__, chain, 'chain.pem')