MAGETWO-36381: Magento\Quote\Api\GuestShippingAddressManagement

- replaced concrete usage with interface

app/code/Magento/Quote/Model/GuestCart/GuestShippingAddressManagement.php

@@ -8,8 +8,7 @@ namespace Magento\Quote\Model\GuestCart;
 use Magento\Quote\Api\GuestShippingAddressManagementInterface;
 use Magento\Quote\Model\QuoteIdMask;
 use Magento\Quote\Model\QuoteIdMaskFactory;
-use Magento\Quote\Model\ShippingAddressManagement;
-
+use Magento\Quote\Api\ShippingAddressManagementInterface;
 /**
  * Shipping address management class for guest carts.
  */
@@ -21,18 +20,18 @@ class GuestShippingAddressManagement implements GuestShippingAddressManagementIn
     protected $quoteIdMaskFactory;
 
     /**
-     * @var ShippingAddressManagement
+     * @var ShippingAddressManagementInterface
      */
     protected $shippingAddressManagement;
 
     /**
      * Constructs a quote shipping address write service object.
      *
-     * @param ShippingAddressManagement $shippingAddressManagement
+     * @param ShippingAddressManagementInterface $shippingAddressManagement
      * @param QuoteIdMaskFactory $quoteIdMaskFactory
      */
     public function __construct(
-        ShippingAddressManagement $shippingAddressManagement,
+        ShippingAddressManagementInterface $shippingAddressManagement,
         QuoteIdMaskFactory $quoteIdMaskFactory
     ) {
         $this->shippingAddressManagement = $shippingAddressManagement;

app/code/Magento/Quote/Test/Unit/Model/GuestCart/GuestShippingAddressManagementTest.php

@@ -4,7 +4,6 @@
  * Copyright © 2015 Magento. All rights reserved.
  * See COPYING.txt for license details.
  */
-
 namespace Magento\Quote\Test\Unit\Model\GuestCart;
 
 class GuestShippingAddressManagementTest extends \PHPUnit_Framework_TestCase
@@ -49,7 +48,7 @@ class GuestShippingAddressManagementTest extends \PHPUnit_Framework_TestCase
         $objectManager = new \Magento\Framework\TestFramework\Unit\Helper\ObjectManager($this);
 
         $this->shippingAddressManagementMock = $this->getMock(
-            'Magento\Quote\Model\ShippingAddressManagement',
+            'Magento\Quote\Api\ShippingAddressManagementInterface',
             [],
             [],
             '',