Update comments for net/data/verify_certificate_chain_unittest/

net/data/verify_certificate_chain_unittest/non-self-signed-root/generate-chains.py

Index: net/data/verify_certificate_chain_unittest/non-self-signed-root/generate-chains.py
diff --git a/net/data/verify_certificate_chain_unittest/non-self-signed-root/generate-chains.py b/net/data/verify_certificate_chain_unittest/non-self-signed-root/generate-chains.py
index 858b18e31780cc7fb94a91c1f440f149aae72d0e..7c6d6d8a3955631e23366489a3106d36b5481dc2 100755
--- a/net/data/verify_certificate_chain_unittest/non-self-signed-root/generate-chains.py
+++ b/net/data/verify_certificate_chain_unittest/non-self-signed-root/generate-chains.py
@@ -3,9 +3,8 @@
 # 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 trusted root
-is NOT self signed, however its issuer is not included in the chain or root
-store. Verification is expected to succeed since the root is trusted."""
+"""Certificate chain where the root certificate is not self-signed (or
+self-issued for that matter)."""
 
 import sys
 sys.path += ['..']
@@ -14,7 +13,7 @@ import common
 
 shadow_root = common.create_self_signed_root_certificate('ShadowRoot')
 
-# Non-self-signed root (part of trust store).
+# Non-self-signed root certificate.
 root = common.create_intermediate_certificate('Root', shadow_root)
 
 # Intermediate certificate.