[cros/net] Add DnsConfigService to NetworkChangeNotifierChromeos.

chrome/browser/chromeos/net/network_change_notifier_chromeos.h

Index: chrome/browser/chromeos/net/network_change_notifier_chromeos.h
diff --git a/chrome/browser/chromeos/net/network_change_notifier_chromeos.h b/chrome/browser/chromeos/net/network_change_notifier_chromeos.h
index 071102e2d54cc86fbe0f3f139b3a72a285c5921e..4ad47865db26e630b3827bad326410b232cb48be 100644
--- a/chrome/browser/chromeos/net/network_change_notifier_chromeos.h
+++ b/chrome/browser/chromeos/net/network_change_notifier_chromeos.h
@@ -36,6 +36,8 @@ class NetworkChangeNotifierChromeos
  private:
   friend class OnlineStatusReportThreadTask;
 
+  class DnsConfigServiceChromeos;
+
   // PowerManagerClient::Observer overrides.
   virtual void PowerChanged(const PowerSupplyStatus& status) OVERRIDE;
 
@@ -84,6 +86,8 @@ class NetworkChangeNotifierChromeos
   // Current active network's IP address.
   std::string ip_address_;
 
+  scoped_ptr<DnsConfigServiceChromeos> dns_config_service_;
+
   // The last reported online state.
   bool is_online_;
   base::WeakPtrFactory<NetworkChangeNotifierChromeos> weak_factory_;