[DevTools] Network.emulateNetworkConditions now affects NetworkStateNotifier.

third_party/WebKit/LayoutTests/netinfo/resources/netinfo_common.js

 window.jsTestIsAsync = true;
 
 var connection = navigator.connection;
 var initialType = "bluetooth";
 var initialDownlinkMax = 1.0;
 var newConnectionType = "ethernet";
 var newDownlinkMax = 2.0;
 
 // Suppress connection messages information from the host.
 if (window.internals) {
-    internals.setNetworkStateNotifierTestOnly(true);
-    internals.setNetworkConnectionInfo(initialType, initialDownlinkMax);
+    internals.setNetworkConnectionInfoOverride(true, initialType, initialDownlinkMax);
 
     // Reset the state of the singleton network state notifier.
     window.addEventListener('beforeunload', function() {
-        internals.setNetworkStateNotifierTestOnly(false);
+        internals.clearNetworkConnectionInfoOverride();
     }, false);
 }
 
+function isTypeOnline(type) {
+    return type != 'none';
+}