Add the capability to run multiple proxy PAC scripts in parallel....

net/proxy/proxy_resolver_js_bindings.h

 // Copyright (c) 2009 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_RESOLVER_JS_BINDINGS_H_
 #define NET_PROXY_PROXY_RESOLVER_JS_BINDINGS_H_
 
 #include <string>
 
 #include "base/string16.h"
@@ skipping 36 matching lines @@
   //
   // This is a Microsoft extension to PAC for IPv6, see:
   // http://blogs.msdn.com/wndp/articles/IPV6_PAC_Extensions_v0_9.aspx
   virtual bool DnsResolveEx(const std::string& host,
                             std::string* ip_address_list) = 0;
 
   // Handler for when an error is encountered. |line_number| may be -1
   // if a line number is not applicable to this error.
   virtual void OnError(int line_number, const string16& error) = 0;
 
+  // Called before the thread running the proxy resolver is stopped.
+  virtual void Shutdown() = 0;
+
   // Creates a default javascript bindings implementation that will:
   //   - Send script error messages to LOG(INFO)
   //   - Send script alert()s to LOG(INFO)
   //   - Use the provided host resolver to service dnsResolve().
   //
   // Note that |host_resolver| will be used in sync mode mode.
   static ProxyResolverJSBindings* CreateDefault(HostResolver* host_resolver);
 
   // Sets details about the currently executing FindProxyForURL() request.
   void set_current_request_context(
       ProxyResolverRequestContext* current_request_context) {
     current_request_context_ = current_request_context;
   }
 
   // Retrieves details about the currently executing FindProxyForURL() request.
   ProxyResolverRequestContext* current_request_context() {
     return current_request_context_;
   }
 
  private:
   ProxyResolverRequestContext* current_request_context_;
 };
 
 }  // namespace net
 
 #endif  // NET_PROXY_PROXY_RESOLVER_JS_BINDINGS_H_