Track sources of proxy settings.

net/proxy/proxy_list.h

 // Copyright (c) 2011 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_LIST_H_
 #define NET_PROXY_PROXY_LIST_H_
 #pragma once
 
 #include <string>
 #include <vector>
@@ skipping 22 matching lines @@
   void SetSingleProxyServer(const ProxyServer& proxy_server);
 
   // De-prioritizes the proxies that we have cached as not working, by moving
   // them to the end of the fallback list.
   void DeprioritizeBadProxies(const ProxyRetryInfoMap& proxy_retry_info);
 
   // Delete any entry which doesn't have one of the specified proxy schemes.
   // |scheme_bit_field| is a bunch of ProxyServer::Scheme bitwise ORed together.
   void RemoveProxiesWithoutScheme(int scheme_bit_field);
 
+  // Clear the proxy list.
+  void Clear();
+
   // Returns true if there is nothing left in the ProxyList.
   bool IsEmpty() const;
 
   // Returns the first proxy server in the list. It is only valid to call
   // this if !IsEmpty().
   const ProxyServer& Get() const;
 
   // Sets the list by parsing the pac result |pac_string|.
   // Some examples for |pac_string|:
   //   "DIRECT"
@@ skipping 13 matching lines @@
                 const BoundNetLog& net_log);
 
  private:
   // List of proxies.
   std::vector<ProxyServer> proxies_;
 };
 
 }  // namespace net
 
 #endif  // NET_PROXY_PROXY_LIST_H_