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

net/proxy/proxy_config_service_ios.cc

Index: net/proxy/proxy_config_service_ios.cc
diff --git a/net/proxy/proxy_config_service_ios.cc b/net/proxy/proxy_config_service_ios.cc
index fdeb1bb4f30aec95f20a53557dd3a1f39bbe6c5a..61893f8bb3f34b786d96f8c3bdf36792ae782958 100644
--- a/net/proxy/proxy_config_service_ios.cc
+++ b/net/proxy/proxy_config_service_ios.cc
@@ -78,10 +78,10 @@ void GetCurrentProxyConfig(ProxyConfig* config) {
     if (proxy_server.is_valid()) {
       config->proxy_rules().type =
           ProxyConfig::ProxyRules::TYPE_PROXY_PER_SCHEME;
-      config->proxy_rules().proxy_for_http = proxy_server;
+      config->proxy_rules().proxy_for_http.SetSingleProxyServer(proxy_server);
       // Desktop Safari applies the HTTP proxy to http:// URLs only, but
       // Mobile Safari applies the HTTP proxy to https:// URLs as well.
-      config->proxy_rules().proxy_for_https = proxy_server;
+      config->proxy_rules().proxy_for_https.SetSingleProxyServer(proxy_server);
     }
   }