Minor clean-up tasks that were TODO(snej)

net/base/ev_root_ca_metadata.cc

Index: net/base/ev_root_ca_metadata.cc
diff --git a/net/base/ev_root_ca_metadata.cc b/net/base/ev_root_ca_metadata.cc
index 2212723d6d503b216fbd1c8193bf71b7841b59cf..023b1fb7be5387432fca332886e4b39a1064abb4 100644
--- a/net/base/ev_root_ca_metadata.cc
+++ b/net/base/ev_root_ca_metadata.cc
@@ -20,7 +20,7 @@ namespace net {
 struct EVMetadata {
   // The SHA-1 fingerprint of the root CA certificate, used as a unique
   // identifier for a root CA certificate.
-  X509Certificate::Fingerprint fingerprint;
+  SHA1Fingerprint fingerprint;
 
   // The EV policy OID of the root CA.
   // Note: a root CA may have multiple EV policies.  When that actually
@@ -233,7 +233,7 @@ EVRootCAMetadata* EVRootCAMetadata::GetInstance() {
 }
 
 bool EVRootCAMetadata::GetPolicyOID(
-    const X509Certificate::Fingerprint& fingerprint,
+    const SHA1Fingerprint& fingerprint,
     PolicyOID* policy_oid) const {
   PolicyOidMap::const_iterator iter = ev_policy_.find(fingerprint);
   if (iter == ev_policy_.end())