Bluetooth: macOS: Implement BluetoothRemoteGattCharacteristicMac::UnsubscribeFromNotifications

BUG=633191

Review-Url: https://codereview.chromium.org/2634873002
Cr-Commit-Position: refs/heads/master@{#450295}
diff --git a/device/bluetooth/test/mock_bluetooth_cbperipheral_mac.mm b/device/bluetooth/test/mock_bluetooth_cbperipheral_mac.mm
index 8a5eafe..a11a11b 100644
--- a/device/bluetooth/test/mock_bluetooth_cbperipheral_mac.mm
+++ b/device/bluetooth/test/mock_bluetooth_cbperipheral_mac.mm
@@ -190,7 +190,8 @@
 
 - (void)setNotifyValue:(BOOL)notification
      forCharacteristic:(CBCharacteristic*)characteristic {
-  _bluetoothTestMac->OnFakeBluetoothGattSetCharacteristicNotification();
+  _bluetoothTestMac->OnFakeBluetoothGattSetCharacteristicNotification(
+      notification == YES);
 }
 
 @end