[net/dns] Removes locking from DnsConfigServiceWin and adds local computer name.

net/dns/dns_config_service_win.h

Index: net/dns/dns_config_service_win.h
diff --git a/net/dns/dns_config_service_win.h b/net/dns/dns_config_service_win.h
index 3159f770c0017f19cbbe67bfd6b400a7462ede33..5415b0b40e6aaf34f5c8b526ab2d8ba1e4319a3e 100644
--- a/net/dns/dns_config_service_win.h
+++ b/net/dns/dns_config_service_win.h
@@ -48,12 +48,10 @@ class NET_EXPORT_PRIVATE DnsConfigServiceWin
 
  private:
   class ConfigReader;
-
-  void OnHostsChanged(bool succeeded);
+  class HostsReader;
 
   scoped_refptr<ConfigReader> config_reader_;
-  scoped_ptr<FilePathWatcherWrapper> hosts_watcher_;
-  scoped_refptr<SerialWorker> hosts_reader_;
+  scoped_ptr<HostsReader> hosts_reader_;
 
   DISALLOW_COPY_AND_ASSIGN(DnsConfigServiceWin);
 };