Refactor how net/data/verify_certificate_chain_unittest/*

net/data/verify_certificate_chain_unittest/constrained-root-basic-constraints-ca-false/generate-chains.py

Index: net/data/verify_certificate_chain_unittest/constrained-root-basic-constraints-ca-false/generate-chains.py
diff --git a/net/data/verify_certificate_chain_unittest/generate-constrained-root-basic-constraints-ca-false.py b/net/data/verify_certificate_chain_unittest/constrained-root-basic-constraints-ca-false/generate-chains.py
similarity index 75%
rename from net/data/verify_certificate_chain_unittest/generate-constrained-root-basic-constraints-ca-false.py
rename to net/data/verify_certificate_chain_unittest/constrained-root-basic-constraints-ca-false/generate-chains.py
index d8f1d3f6f6399f3dae2dc08ab4e1d36ad7b1c3fb..4919d354567d909b03fca1f2cfa35f654e27de26 100755
--- a/net/data/verify_certificate_chain_unittest/generate-constrained-root-basic-constraints-ca-false.py
+++ b/net/data/verify_certificate_chain_unittest/constrained-root-basic-constraints-ca-false/generate-chains.py
@@ -8,6 +8,9 @@ has a basic constraints extension that indicates it is NOT a CA. Verification
 is expected to succeed even though the trust anchor enforces constraints, since
 the CA part of basic constraints is not enforced."""
 
+import sys
+sys.path += ['..']
+
 import common
 
 # Self-signed root certificate (used as trust anchor) with non-CA basic
@@ -21,12 +24,5 @@ intermediate = common.create_intermediate_certificate('Intermediate', root)
 # Target certificate.
 target = common.create_end_entity_certificate('Target', intermediate)
 
-chain = [target, intermediate]
-trusted = common.TrustAnchor(root, constrained=True)
-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')