Refactor how net/data/verify_certificate_chain_unittest/*

net/data/verify_certificate_chain_unittest/target-signed-using-ecdsa/generate-chains.py

Index: net/data/verify_certificate_chain_unittest/target-signed-using-ecdsa/generate-chains.py
diff --git a/net/data/verify_certificate_chain_unittest/generate-target-signed-using-ecdsa.py b/net/data/verify_certificate_chain_unittest/target-signed-using-ecdsa/generate-chains.py
similarity index 74%
rename from net/data/verify_certificate_chain_unittest/generate-target-signed-using-ecdsa.py
rename to net/data/verify_certificate_chain_unittest/target-signed-using-ecdsa/generate-chains.py
index c986a554881413441208e195a83ccdefb83b279a..b852f3f70f562892a9eaa8cff9b358f2ccfd3355 100755
--- a/net/data/verify_certificate_chain_unittest/generate-target-signed-using-ecdsa.py
+++ b/net/data/verify_certificate_chain_unittest/target-signed-using-ecdsa/generate-chains.py
@@ -6,6 +6,9 @@
 """Certificate chain with a trusted root using RSA, and intermediate using EC,
 and a target certificate using RSA. Verification is expected to succeed."""
 
+import sys
+sys.path += ['..']
+
 import common
 
 # Self-signed root certificate (used as trust anchor). using RSA.
@@ -19,12 +22,5 @@ intermediate.set_key(common.get_or_generate_ec_key(
 # Target certificate contains an RSA key (but is signed using ECDSA).
 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')