Resolve Wrong Css at "Minimum Qty Allowed in Shopping Cart" on Google Chrome issue25647

Author: edenduong

dev/tests/integration/testsuite/Magento/CatalogInventory/Block/Adminhtml/Form/Field/CustomergroupTest.php

@@ -22,11 +22,11 @@ protected function setUp()
 
     public function testToHtml()
     {
-        $this->_block->setClass('customer_group_select');
+        $this->_block->setClass('customer_group_select admin__control-select');
         $this->_block->setId('123');
         $this->_block->setTitle('Customer Group');
         $this->_block->setInputName('groups[item_options]');
-        $expectedResult = '<select name="groups[item_options]" id="123" class="customer_group_select" '
+        $expectedResult = '<select name="groups[item_options]" id="123" class="customer_group_select admin__control-select" '
             . 'title="Customer Group" ><option value="32000" >ALL GROUPS</option><option value="0" >NOT LOGGED IN'
             . '</option><option value="1" >General</option><option value="2" >Wholesale</option><option value="3" >'
             . 'Retailer</option></select>';