Adding the last test related with connect/disconnect

device/bluetooth/bluetooth_device_mac.mm

 // 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.
 
 #include "device/bluetooth/bluetooth_device_mac.h"
 
 #include "device/bluetooth/bluetooth_adapter_mac.h"
 
+static NSString* const kErrorDomain = @"ConnectErrorCode";
+
 namespace device {
 
 BluetoothDeviceMac::BluetoothDeviceMac(BluetoothAdapterMac* adapter)
     : BluetoothDevice(adapter) {}
 
 BluetoothDeviceMac::~BluetoothDeviceMac() {
 }
 
+NSError* BluetoothDeviceMac::GetNSErrorFromConnectErrorCode(
+    BluetoothDevice::ConnectErrorCode error_code) {
+  // TODO(http://crbug.com/585894): Need to convert the error.
+  return [NSError errorWithDomain:kErrorDomain code:error_code userInfo:nil];
+}
+
+BluetoothDevice::ConnectErrorCode
+BluetoothDeviceMac::GetConnectErrorCodeFromNSError(NSError* error) {
+  if ([error.domain isEqualToString:kErrorDomain]) {
+    BluetoothDevice::ConnectErrorCode connect_error_code =
+        (BluetoothDevice::ConnectErrorCode)error.code;
+    if (connect_error_code >= 0 ||
+        connect_error_code < BluetoothDevice::NUM_CONNECT_ERROR_CODES) {
+      return connect_error_code;
+    }
+    DCHECK(false);
+    return BluetoothDevice::ERROR_FAILED;
+  }
+  // TODO(http://crbug.com/585894): Need to convert the error.
+  return BluetoothDevice::ERROR_FAILED;
+}
+
 }  // namespace device