This CL changes the lifespan of SSLConnectJobMessengers so that they are created only when needed,

net/socket/ssl_client_socket.h

 // Copyright (c) 2012 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.
 
 #ifndef NET_SOCKET_SSL_CLIENT_SOCKET_H_
 #define NET_SOCKET_SSL_CLIENT_SOCKET_H_
 
 #include <string>
 
 #include "base/gtest_prod_util.h"
@@ skipping 63 matching lines @@
     kNextProtoUnsupported = 0,  // The server doesn't support NPN.
     kNextProtoNegotiated = 1,   // We agreed on a protocol.
     kNextProtoNoOverlap = 2,    // No protocols in common. We requested
                                 // the first protocol in our list.
   };
 
   // StreamSocket:
   virtual bool WasNpnNegotiated() const OVERRIDE;
   virtual NextProto GetNegotiatedProtocol() const OVERRIDE;
 
-  // Format a unique key for the SSL session cache. This method
-  // is necessary so that all classes create cache keys in a consistent
-  // manner.
-  static std::string FormatSessionCacheKey(std::string host_and_port,
-                                           std::string ssl_session_cache_shard);
+  virtual std::string GetSessionCacheKey() const = 0;
 
   // Returns true if there is a cache entry in the ssl session cache
   // for the given cache key.
   //
   // The cache key consists of a host and port concatenated with a session
   // cache shard.
   virtual bool InSessionCache() const = 0;
 
   // Tells the session cache to monitor this socket's session and inform
   // its SSLConnectJobMessenger upon the session's connection's completion.
@@ skipping 117 matching lines @@
   bool signed_cert_timestamps_received_;
   // True if a stapled OCSP response was received.
   bool stapled_ocsp_response_received_;
 
   static bool enable_connect_job_waiting_;
 };
 
 }  // namespace net
 
 #endif  // NET_SOCKET_SSL_CLIENT_SOCKET_H_