Cache certificate verification results in memory.

net/socket/ssl_client_socket_mac.h

Index: net/socket/ssl_client_socket_mac.h
===================================================================
--- net/socket/ssl_client_socket_mac.h	(revision 69359)
+++ net/socket/ssl_client_socket_mac.h	(working copy)
@@ -23,6 +23,7 @@
 
 class CertVerifier;
 class ClientSocketHandle;
+class SingleRequestCertVerifier;
 
 // An SSL client socket implemented with Secure Transport.
 class SSLClientSocketMac : public SSLClientSocket {
@@ -35,7 +36,8 @@
   // the SSL settings.
   SSLClientSocketMac(ClientSocketHandle* transport_socket,
                      const HostPortPair& host_and_port,
-                     const SSLConfig& ssl_config);
+                     const SSLConfig& ssl_config,
+                     CertVerifier* cert_verifier);
   ~SSLClientSocketMac();
 
   // SSLClientSocket methods:
@@ -137,7 +139,8 @@
   State next_handshake_state_;
 
   scoped_refptr<X509Certificate> server_cert_;
-  scoped_ptr<CertVerifier> verifier_;
+  CertVerifier* const cert_verifier_;
+  scoped_ptr<SingleRequestCertVerifier> verifier_;
   CertVerifyResult server_cert_verify_result_;
 
   // The initial handshake has already completed, and the current handshake