bluetooth: mac: write characteristic implementation

device/bluetooth/bluetooth_remote_gatt_service_mac.mm

Index: device/bluetooth/bluetooth_remote_gatt_service_mac.mm
diff --git a/device/bluetooth/bluetooth_remote_gatt_service_mac.mm b/device/bluetooth/bluetooth_remote_gatt_service_mac.mm
index 6e5e167f174b8eccb69860f5998bc43a31c683fe..aadcf19c9302b7b1350a074d4a1f788b0c97ba76 100644
--- a/device/bluetooth/bluetooth_remote_gatt_service_mac.mm
+++ b/device/bluetooth/bluetooth_remote_gatt_service_mac.mm
@@ -128,6 +128,15 @@ void BluetoothRemoteGattServiceMac::DidUpdateValue(
   gatt_characteristic->DidUpdateValue(error);
 }
 
+void BluetoothRemoteGattServiceMac::DidWriteValue(
+    CBCharacteristic* characteristic,
+    NSError* error) {
+  BluetoothRemoteGattCharacteristicMac* gatt_characteristic =
+      GetBluetoothRemoteGattCharacteristicMac(characteristic);
+  DCHECK(gatt_characteristic);
+  gatt_characteristic->DidWriteValue(error);
+}
+
 bool BluetoothRemoteGattServiceMac::IsDiscoveryComplete() {
   return is_discovery_complete_;
 }