MAGETWO-33609: pull request for stories in this sprint

Author: Dale Sikkema

app/code/Magento/Checkout/Controller/Cart/CouponPost.php

@@ -30,7 +30,7 @@ public function __construct(
         \Magento\Checkout\Model\Session $checkoutSession,
         \Magento\Framework\Store\StoreManagerInterface $storeManager,
         \Magento\Framework\Data\Form\FormKey\Validator $formKeyValidator,
-        CustomerCart $cart,
+        \Magento\Checkout\Model\Cart $cart,
         \Magento\Framework\Controller\Result\RedirectFactory $resultRedirectFactory,
         \Magento\Quote\Model\QuoteRepository $quoteRepository
     ) {