Change ProxyRules to handle ProxyLists rather than just single ProxyServer instances.

net/proxy/proxy_list.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_LIST_H_
 #define NET_PROXY_PROXY_LIST_H_
 
 #include <string>
 #include <vector>
 
@@ skipping 13 matching lines @@
   ProxyList();
   ~ProxyList();
 
   // Initializes the proxy list to a string containing one or more proxy servers
   // delimited by a semicolon.
   void Set(const std::string& proxy_uri_list);
 
   // Set the proxy list to a single entry, |proxy_server|.
   void SetSingleProxyServer(const ProxyServer& proxy_server);
 
+  // Append a single proxy server to the end of the proxy list.
+  void AddProxyServer(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);
 
   // Returns true if this proxy list contains at least one proxy that is
   // not currently present in |proxy_retry_info|.
   bool HasUntriedProxies(const ProxyRetryInfoMap& proxy_retry_info) const;
 
   // 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 number of proxy servers in this list.
   size_t size() const;
 
+  // Returns true if |*this| lists the same proxies as |other|.
+  bool Equals(const ProxyList& other) 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"
   //   "PROXY foopy1"
   //   "PROXY foopy1; SOCKS4 foopy2:1188"
   // Does a best-effort parse, and silently discards any errors.
@@ skipping 16 matching lines @@
                                  const BoundNetLog& net_log) const;
 
  private:
   // List of proxies.
   std::vector<ProxyServer> proxies_;
 };
 
 }  // namespace net
 
 #endif  // NET_PROXY_PROXY_LIST_H_