bluetooth: show better error messages for services, characteristics and descriptors

third_party/WebKit/LayoutTests/bluetooth/script-tests/server/disconnect-invalidates-objects.js

 'use strict';
 promise_test(() => {
   let promise;
   return setBluetoothFakeAdapter('TwoHeartRateServicesAdapter')
     .then(() => requestDeviceWithKeyDown({
       filters: [{services: ['heart_rate']}]}))
     .then(device => device.gatt.connect())
     .then(gattServer => {
       return gattServer
         .CALLS([
           getPrimaryService('heart_rate')|
           getPrimaryServices()|
           getPrimaryServices('heart_rate')[UUID]])
         // Convert to array if necessary.
         .then(s => {
           let services = [].concat(s);
           gattServer.disconnect();
           return gattServer.connect()
             .then(() => services);
         });
     })
     .then(services => {
       let promises = Promise.resolve();
       for (let service of services) {
         let error = new DOMException(
-          'Service is no longer valid. Remember to retrieve the service ' +
+          'Service with UUID ' + service.uuid +
+          ' is no longer valid. Remember to retrieve the service ' +
           'again after reconnecting.',
           'InvalidStateError');
         promises = promises.then(() =>
           assert_promise_rejects_with_message(
             service.getCharacteristic('body_sensor_location'),
             error));
         promises = promises.then(() =>
           assert_promise_rejects_with_message(
             service.getCharacteristics(),
             error));
         promises = promises.then(() =>
           assert_promise_rejects_with_message(
             service.getCharacteristics('body_sensor_location'),
             error));
       }
       return promises;
     });
 }, 'Calls on services after we disconnect and connect again. '+
    'Should reject with InvalidStateError.');