Refactor client cert private key handling.

net/ssl/ssl_client_auth_cache.cc

Index: net/ssl/ssl_client_auth_cache.cc
diff --git a/net/ssl/ssl_client_auth_cache.cc b/net/ssl/ssl_client_auth_cache.cc
index bfc5ade12389931559e7550dacd6bbc0ec17e0bd..c1fce7838662c350a9adc051e26c5f985e539571 100644
--- a/net/ssl/ssl_client_auth_cache.cc
+++ b/net/ssl/ssl_client_auth_cache.cc
@@ -33,9 +33,10 @@ bool SSLClientAuthCache::Lookup(const HostPortPair& server,
 }
 
 void SSLClientAuthCache::Add(const HostPortPair& server,
-                             X509Certificate* certificate,
-                             SSLPrivateKey* private_key) {
-  cache_[server] = std::make_pair(certificate, private_key);
+                             scoped_refptr<X509Certificate> certificate,
+                             scoped_refptr<SSLPrivateKey> private_key) {
+  cache_[server] =
+      std::make_pair(std::move(certificate), std::move(private_key));
 
   // TODO(wtc): enforce a maximum number of entries.
 }