Reference count ProxyService....

net/proxy/proxy_service.h

 // Copyright (c) 2006-2008 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_PROXY_PROXY_SERVICE_H_
 #define NET_PROXY_PROXY_SERVICE_H_
 
 #include <string>
 #include <vector>
 
@@ skipping 15 matching lines @@
 
 class InitProxyResolver;
 class LoadLog;
 class ProxyConfigService;
 class ProxyResolver;
 class ProxyScriptFetcher;
 
 // This class can be used to resolve the proxy server to use when loading a
 // HTTP(S) URL.  It uses the given ProxyResolver to handle the actual proxy
 // resolution.  See ProxyResolverV8 for example.
-class ProxyService {
+class ProxyService : public base::RefCountedThreadSafe<ProxyService> {
  public:
   // The instance takes ownership of |config_service| and |resolver|.
-  ProxyService(ProxyConfigService* config_service,
-               ProxyResolver* resolver);
+  ProxyService(ProxyConfigService* config_service, ProxyResolver* resolver);
 
   ~ProxyService();
 
   // Used internally to handle PAC queries.
   // TODO(eroman): consider naming this simply "Request".
   class PacRequest;
 
   // Returns ERR_IO_PENDING if the proxy information could not be provided
   // synchronously, to indicate that the result will be available when the
   // callback is run.  The callback is run on the thread that calls
@@ skipping 240 matching lines @@
 
   base::WaitableEvent event_;
   CompletionCallbackImpl<SyncProxyServiceHelper> callback_;
   ProxyInfo proxy_info_;
   int result_;
 };
 
 }  // namespace net
 
 #endif  // NET_PROXY_PROXY_SERVICE_H_