Fix WebBluetooth generator to distinguish between different methods.

third_party/WebKit/LayoutTests/bluetooth/script-tests/service-no-permission-for-any-service.js

-'use strict';
-promise_test(() => {
-  return setBluetoothFakeAdapter('HeartRateAdapter')
-    .then(() => requestDeviceWithKeyDown({
-      filters: [{name: 'Heart Rate Device'}]}))
-    .then(device => device.gatt.connect())
-    .then(gattServer => assert_promise_rejects_with_message(
-        gattServer.CALLS([
-          getPrimaryService('heart_rate')|
-          getPrimaryServices()|
-          getPrimaryServices('heart_rate')[UUID]]),
-        new DOMException('Origin is not allowed to access any service. Tip: ' +
-                         'Add the service UUID to \'optionalServices\' in ' +
-                         'requestDevice() options. https://goo.gl/HxfxSQ',
-                         'SecurityError')));
-}, 'Request for present service without permission to access any service. ' +
-   'Reject with SecurityError.');
-</script>