Retry proxies which were cached as bad before giving up....

net/proxy/proxy_info.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_INFO_H_
 #define NET_PROXY_PROXY_INFO_H_
 
 #include <string>
 
 #include "net/proxy/proxy_config.h"
@@ skipping 50 matching lines @@
 
   // See description in ProxyList::ToPacString().
   std::string ToPacString() const;
 
   // Marks the current proxy as bad. Returns true if there is another proxy
   // available to try in proxy list_.
   bool Fallback(ProxyRetryInfoMap* proxy_retry_info) {
     return proxy_list_.Fallback(proxy_retry_info);
   }
 
-  // Remove all proxies known to be bad from the proxy list.
-  void RemoveBadProxies(const ProxyRetryInfoMap& proxy_retry_info) {
-    proxy_list_.RemoveBadProxies(proxy_retry_info);
+  // De-prioritizes the proxies that we have cached as not working, by moving
+  // them to the end of the proxy list.
+  void DeprioritizeBadProxies(const ProxyRetryInfoMap& proxy_retry_info) {
+    proxy_list_.DeprioritizeBadProxies(proxy_retry_info);
   }
 
   // Delete any entry which doesn't have one of the specified proxy schemes.
   void RemoveProxiesWithoutScheme(int scheme_bit_field) {
     proxy_list_.RemoveProxiesWithoutScheme(scheme_bit_field);
   }
 
  private:
   friend class ProxyService;
 
   // The ordered list of proxy servers (including DIRECT attempts) remaining to
   // try. If proxy_list_ is empty, then there is nothing left to fall back to.
   ProxyList proxy_list_;
 
   // This value identifies the proxy config used to initialize this object.
   ProxyConfig::ID config_id_;
 };
 
 }  // namespace net
 
 #endif  // NET_PROXY_PROXY_INFO_H_