Refactor PPB_NetworkMonitor_Private interface to use CompletionCallback.

ppapi/tests/test_network_monitor_private.h

Index: ppapi/tests/test_network_monitor_private.h
diff --git a/ppapi/tests/test_network_monitor_private.h b/ppapi/tests/test_network_monitor_private.h
index 38016d2de93cda0758da11b5e7a96159d61cf4d2..de5c1150c20c48122c95b2b7b2563edc76f30597 100644
--- a/ppapi/tests/test_network_monitor_private.h
+++ b/ppapi/tests/test_network_monitor_private.h
@@ -26,10 +26,10 @@ class TestNetworkMonitorPrivate : public TestCase {
   std::string TestBasic();
   std::string Test2Monitors();
   std::string TestDeleteInCallback();
-  std::string TestListObserver();
 
   std::string VerifyNetworkListResource(PP_Resource network_resource);
   std::string VerifyNetworkList(const pp::NetworkListPrivate& network_list);
+
 };
 
 #endif  // PAPPI_TESTS_TEST_NETWORK_MONITOR_PRIVATE_H_