Implement WebBluetooth getDescriptor[s]

third_party/WebKit/LayoutTests/resources/bluetooth/bluetooth-helpers.js

 'use strict';
 
 // Bluetooth UUID constants:
 // Services:
 var blocklist_test_service_uuid = "611c954a-263b-4f4a-aab6-01ddb953f985";
 var request_disconnection_service_uuid = "01d7d889-7451-419f-aeb8-d65e7b9277af";
 // Characteristics:
 var blocklist_exclude_reads_characteristic_uuid =
   "bad1c9a2-9a5b-4015-8b60-1579bbbf2135";
 var request_disconnection_characteristic_uuid =
   "01d7d88a-7451-419f-aeb8-d65e7b9277af";
+// Descriptors:
+var blocklist_test_descriptor_uuid = "bad2ddcf-60db-45cd-bef9-fd72b153cf7c";
 
 // Sometimes we need to test that using either the name, alias, or UUID
 // produces the same result. The following objects help us do that.
 var generic_access = {
   alias: 0x1800,
   name: 'generic_access',
   uuid: '00001800-0000-1000-8000-00805f9b34fb'
 };
 var device_name = {
   alias: 0x2a00,
@@ skipping 23 matching lines @@
 var battery_service = {
   alias: 0x180f,
   name: 'battery_service',
   uuid: '0000180f-0000-1000-8000-00805f9b34fb'
 };
 var battery_level = {
   alias: 0x2A19,
   name: 'battery_level',
   uuid: '00002a19-0000-1000-8000-00805f9b34fb'
 };
+var user_description = {
+  alias: 0x2901,
+  name: 'gatt.characteristic_user_description',
+  uuid: '00002901-0000-1000-8000-00805f9b34fb'
+};
+var client_characteristic_configuration = {
+  alias: 0x2902,
+  name: 'gatt.client_characteristic_configuration',
+  uuid: '00002902-0000-1000-8000-00805f9b34fb'
+};
 
 // The following tests make sure the Web Bluetooth implementation
 // responds correctly to the different types of errors the
 // underlying platform might return for GATT operations.
 
 // Each browser should map these characteristics to specific code paths
 // that result in different errors thus increasing code coverage
 // when testing. Therefore some of these characteristics might not be useful
 // for all browsers.
 //
@@ skipping 290 matching lines @@
     filters: [{ services: services, name: 'Name' }],
     optionalServices: ['heart_rate']
   }, {
     filters: [{ services: services, namePrefix: 'Pre' }],
     optionalServices: ['heart_rate']
   }, {
     filters: [{ services: services, name: 'Name', namePrefix: 'Pre' }],
     optionalServices: ['heart_rate']
   }];
 }