Implement WebBluetooth getDescriptor[s]

content/shell/browser/layout_test/layout_test_bluetooth_adapter_provider.h

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CONTENT_SHELL_BROWSER_LAYOUT_TEST_LAYOUT_TEST_BLUETOOTH_ADAPTER_PROVIDER_H_
 #define CONTENT_SHELL_BROWSER_LAYOUT_TEST_LAYOUT_TEST_BLUETOOTH_ADAPTER_PROVIDER_H_
 
 #include <stdint.h>
 
 #include "base/callback.h"
@@ skipping 314 matching lines @@
   //       - Request Disconnection Service: - Characteristics as described in
   //         GetDisconnectingService
   //       - Health Thermometer:
   //         - Measurement Interval (0x2a21):
   //           - Read: Calls GattCharacteristicValueChanged and success
   //               callback with [1].
   //           - Write: Calls success callback.
   //           - StartNotifySession: Run success callback.
   //           - GetProperties: Returns
   //               BluetoothRemoteGattCharacteristic::PROPERTY_READ
+  //           - Descriptors
+  //             - User Description (2901)
+  //             - Client Characteristic Configuration (2902)
+  //                 Note: This descriptor is blocklisted for writes.
+  //             - bad2ddcf-60db-45cd-bef9-fd72b153cf7c
+  //                 A test descriptor that is blocklisted.
+
   static scoped_refptr<testing::NiceMock<device::MockBluetoothAdapter>>
   GetDisconnectingHealthThermometer();
 
   // |ServicesDiscoveredAfterReconnectionAdapter|(disconnect)
   // Inherits from |HeartRateAdapter|
   // Internal Structure:
   //   - Heart Rate Device
   //      - UUIDs:
   //         - Generic Access UUID (0x1800)
   //         - Heart Rate UUID (0x180d)
@@ skipping 492 matching lines @@
 
   // Function to turn an integer into an MAC address of the form
   // XX:XX:XX:XX:XX:XX. For example makeMACAddress(0xdeadbeef)
   // returns "00:00:DE:AD:BE:EF".
   static std::string makeMACAddress(uint64_t addr);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_SHELL_BROWSER_LAYOUT_TEST_LAYOUT_TEST_BLUETOOTH_ADAPTER_PROVIDER_H_