Implement WebBluetooth descriptor.readValue()

content/shell/browser/layout_test/layout_test_bluetooth_adapter_provider.h

Index: content/shell/browser/layout_test/layout_test_bluetooth_adapter_provider.h
diff --git a/content/shell/browser/layout_test/layout_test_bluetooth_adapter_provider.h b/content/shell/browser/layout_test/layout_test_bluetooth_adapter_provider.h
index 6b6342edf6106cdfddc20b114ecc81d29c8b02b7..b06ec6d3e9d0f045a0c2d83ba3620895f976baaa 100644
--- a/content/shell/browser/layout_test/layout_test_bluetooth_adapter_provider.h
+++ b/content/shell/browser/layout_test/layout_test_bluetooth_adapter_provider.h
@@ -332,7 +332,7 @@ class LayoutTestBluetoothAdapterProvider {
   //           - StartNotifySession: Run success callback.
   //           - GetProperties: Returns
   //               BluetoothRemoteGattCharacteristic::PROPERTY_READ
-  //           - Descriptors
+  //           - Descriptors (if |addDescriptor| input is true)
   //             - User Description (2901)
   //             - Client Characteristic Configuration (2902)
   //                 Note: This descriptor is blocklisted for writes.
@@ -340,7 +340,7 @@ class LayoutTestBluetoothAdapterProvider {
   //                 A test descriptor that is blocklisted.
 
   static scoped_refptr<testing::NiceMock<device::MockBluetoothAdapter>>
-  GetDisconnectingHealthThermometer();
+  GetDisconnectingHealthThermometer(bool addDescriptor);
 
   // |ServicesDiscoveredAfterReconnectionAdapter|(disconnect)
   // Inherits from |HeartRateAdapter|