Allow ProxyService to share URLRequestContext with everything else.

net/proxy/proxy_script_decider.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_PROXY_PROXY_SCRIPT_DECIDER_H_
 #define NET_PROXY_PROXY_SCRIPT_DECIDER_H_
 
 #include <stddef.h>
 
 #include <string>
@@ skipping 63 matching lines @@
   // deciding on will be available vial the effective_settings() accessor.
   // Note that this may differ from |config| since we will have stripped any
   // manual settings, and decided whether to use auto-detect or the custom PAC
   // URL. Finally, if auto-detect was used we may now have resolved that to a
   // specific script URL.
   int Start(const ProxyConfig& config,
             const base::TimeDelta wait_delay,
             bool fetch_pac_bytes,
             const CompletionCallback& callback);
 
+  // Shuts down any in-progress DNS requests, and cancels any ScriptFetcher
+  // requests.  Does not call OnShutdown on the [Dhcp]ProxyScriptFetcher.
+  void OnShutdown();
+
   const ProxyConfig& effective_config() const;
 
   const scoped_refptr<ProxyResolverScriptData>& script_data() const;
 
   void set_quick_check_enabled(bool enabled) {
     quick_check_enabled_ = enabled;
   }
 
   bool quick_check_enabled() const { return quick_check_enabled_; }
 
@@ skipping 102 matching lines @@
 
   // Whether to do DNS quick check
   bool quick_check_enabled_;
 
   // Results.
   ProxyConfig effective_config_;
   scoped_refptr<ProxyResolverScriptData> script_data_;
 
   AddressList wpad_addresses_;
   base::OneShotTimer quick_check_timer_;
-  HostResolver* host_resolver_;
   std::unique_ptr<HostResolver::Request> request_;
   base::Time quick_check_start_time_;
 
   DISALLOW_COPY_AND_ASSIGN(ProxyScriptDecider);
 };
 
 }  // namespace net
 
 #endif  // NET_PROXY_PROXY_SCRIPT_DECIDER_H_