Bluetooth: macOS: Implement BluetoothRemoteGattCharacteristicMac::UnsubscribeFromNotifications

device/bluetooth/test/bluetooth_test_mac.mm

Index: device/bluetooth/test/bluetooth_test_mac.mm
diff --git a/device/bluetooth/test/bluetooth_test_mac.mm b/device/bluetooth/test/bluetooth_test_mac.mm
index f0e3b882997d1385fb5915856ad35818a8e37705..3ec6e6619ce198d28e4b02c3e06d93099a607412 100644
--- a/device/bluetooth/test/bluetooth_test_mac.mm
+++ b/device/bluetooth/test/bluetooth_test_mac.mm
@@ -421,6 +421,22 @@ void BluetoothTestMac::SimulateGattNotifySessionStartError(
   [characteristic_mock simulateGattNotifySessionFailedWithError:error];
 }
 
+void BluetoothTestMac::SimulateGattNotifySessionStopped(
+    BluetoothRemoteGattCharacteristic* characteristic) {
+  MockCBCharacteristic* characteristic_mock =
+      GetCBMockCharacteristic(characteristic);
+  [characteristic_mock simulateGattNotifySessionStopped];
+}
+
+void BluetoothTestMac::SimulateGattNotifySessionStopError(
+    BluetoothRemoteGattCharacteristic* characteristic,
+    BluetoothRemoteGattService::GattErrorCode error_code) {
+  MockCBCharacteristic* characteristic_mock =
+      GetCBMockCharacteristic(characteristic);
+  NSError* error = BluetoothDeviceMac::GetNSErrorFromGattErrorCode(error_code);
+  [characteristic_mock simulateGattNotifySessionStoppedWithError:error];
+}
+
 void BluetoothTestMac::SimulateGattCharacteristicChanged(
     BluetoothRemoteGattCharacteristic* characteristic,
     const std::vector<uint8_t>& value) {