Refactor how net/data/verify_certificate_chain_unittest/*

net/data/verify_certificate_chain_unittest/generate-intermediate-lacks-signing-key-usage.py

Index: net/data/verify_certificate_chain_unittest/generate-intermediate-lacks-signing-key-usage.py
diff --git a/net/data/verify_certificate_chain_unittest/generate-intermediate-lacks-signing-key-usage.py b/net/data/verify_certificate_chain_unittest/generate-intermediate-lacks-signing-key-usage.py
deleted file mode 100755
index b04faef3c1b32ca9808891add3849e0193b20f55..0000000000000000000000000000000000000000
--- a/net/data/verify_certificate_chain_unittest/generate-intermediate-lacks-signing-key-usage.py
+++ /dev/null
@@ -1,34 +0,0 @@
-#!/usr/bin/python
-# Copyright (c) 2015 The Chromium Authors. All rights reserved.
-# Use of this source code is governed by a BSD-style license that can be
-# found in the LICENSE file.
-
-"""Certificate chain with 1 intermediate and a trusted root. The intermediate
-contains a keyUsage extension, HOWEVER it does not contain the keyCertSign bit.
-Hence validation is expected to fail."""
-
-import common
-
-# Self-signed root certificate (used as trust anchor).
-root = common.create_self_signed_root_certificate('Root')
-
-# Intermediate that is missing keyCertSign.
-intermediate = common.create_intermediate_certificate('Intermediate', root)
-intermediate.get_extensions().set_property('keyUsage',
-    'critical,digitalSignature,keyEncipherment')
-
-# 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 = False
-errors = """----- Certificate i=1 (CN=Intermediate) -----
-ERROR: keyCertSign bit is not set
-
-"""
-
-common.write_test_file(__doc__, chain, trusted, time, key_purpose,
-                       verify_result, errors)