Use automatic memory management for URLRequestContext's members....

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 <map>
 #include <vector>
 
@@ skipping 65 matching lines @@
   // this delay.
   base::TimeDelta current_delay;
 };
 
 // Map of proxy servers with the associated RetryInfo structures.
 typedef std::map<std::string, ProxyRetryInfo> ProxyRetryInfoMap;
 
 // 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 ProxyResolverWinHttp for example.
-class ProxyService {
+class ProxyService : public base::RefCounted<ProxyService> {
  public:
   // The instance takes ownership of |resolver|.
   explicit ProxyService(ProxyResolver* resolver);
 
   // Used internally to handle PAC queries.
   class PacRequest;
 
   // Returns OK if proxy information could be provided synchronously.  Else,
   // ERR_IO_PENDING is returned to indicate that the result will be available
   // when the callback is run.  The callback is run on the thread that calls
@@ skipping 34 matching lines @@
                                 PacRequest** pac_request);
 
   // Call this method with a non-null |pac_request| to cancel the PAC request.
   void CancelPacRequest(PacRequest* pac_request);
 
   // Create a proxy service using the specified settings. If |pi| is NULL then
   // the system's default proxy settings will be used (on Windows this will
   // use IE's settings).
   static ProxyService* Create(const ProxyInfo* pi);
 
+  // Create a ProxyService which fails every request, causing fallback to a
+  // direct connection. Convenience function used by unit tests.
+  static ProxyService* CreateNull();
+
   // TODO(eroman): remove once WinHTTP is gone.
   // Get the ProxyInfo used to create this proxy service (only used by WinHTTP).
   const ProxyInfo* proxy_info() const {
     return proxy_info_.get();
   }
 
  private:
   friend class PacRequest;
 
   ProxyResolver* resolver() { return resolver_.get(); }
@@ skipping 153 matching lines @@
   // code if otherwise.
   virtual int GetProxyForURL(const GURL& query_url,
                              const GURL& pac_url,
                              ProxyInfo* results) = 0;
 };
 
 }  // namespace net
 
 #endif  // NET_PROXY_PROXY_SERVICE_H_