Use page result instead of rendering layout directly in controllers

app/code/Magento/Backup/Controller/Adminhtml/Index/Grid.php

@@ -6,16 +6,17 @@
  */
 namespace Magento\Backup\Controller\Adminhtml\Index;
 
+use Magento\Framework\Controller\ResultFactory;
+
 class Grid extends \Magento\Backup\Controller\Adminhtml\Index
 {
     /**
      * Backup list action
      *
-     * @return void
+     * @return \Magento\Framework\Controller\ResultInterface
      */
     public function execute()
     {
-        $this->_view->loadLayout();
-        $this->_view->renderLayout();
+        return $this->resultFactory->create(ResultFactory::TYPE_PAGE);
     }
 }

app/code/Magento/CatalogSearch/Controller/Advanced/Index.php

@@ -6,14 +6,15 @@
  */
 namespace Magento\CatalogSearch\Controller\Advanced;
 
+use Magento\Framework\Controller\ResultFactory;
+
 class Index extends \Magento\Framework\App\Action\Action
 {
     /**
-     * @return void
+     * @return \Magento\Framework\Controller\ResultInterface
      */
     public function execute()
     {
-        $this->_view->loadLayout();
-        $this->_view->renderLayout();
+        return $this->resultFactory->create(ResultFactory::TYPE_PAGE);
     }
 }

app/code/Magento/Contact/Controller/Index/Index.php

@@ -6,16 +6,17 @@
  */
 namespace Magento\Contact\Controller\Index;
 
+use Magento\Framework\Controller\ResultFactory;
+
 class Index extends \Magento\Contact\Controller\Index
 {
     /**
      * Show Contact Us page
      *
-     * @return void
+     * @return \Magento\Framework\Controller\ResultInterface
      */
     public function execute()
     {
-        $this->_view->loadLayout();
-        $this->_view->renderLayout();
+        return $this->resultFactory->create(ResultFactory::TYPE_PAGE);
     }
 }

app/code/Magento/Contact/Test/Unit/Controller/Index/IndexTest.php

@@ -6,6 +6,9 @@
 
 namespace Magento\Contact\Test\Unit\Controller\Index;
 
+use Magento\Framework\Controller\ResultFactory;
+use Magento\Framework\Controller\ResultInterface;
+
 class IndexTest extends \PHPUnit_Framework_TestCase
 {
     /**
@@ -25,7 +28,7 @@ class IndexTest extends \PHPUnit_Framework_TestCase
      * View mock
      * @var \Magento\Framework\App\ViewInterface|\PHPUnit_Framework_MockObject_MockObject
      */
-    protected $_view;
+    protected $resultFactory;
 
     /**
      * Url mock
@@ -43,7 +46,7 @@ protected function setUp()
         );
         $context = $this->getMock(
             \Magento\Framework\App\Action\Context::class,
-            ['getRequest', 'getResponse', 'getView', 'getUrl'],
+            ['getRequest', 'getResponse', 'getResultFactory', 'getUrl'],
             [],
             '',
             false
@@ -67,17 +70,17 @@ protected function setUp()
                 $this->getMockForAbstractClass(\Magento\Framework\App\ResponseInterface::class, [], '', false)
             ));
 
-        $this->_view = $this->getMock(
-            \Magento\Framework\App\ViewInterface::class,
+        $this->resultFactory = $this->getMock(
+            ResultFactory::class,
             [],
             [],
             '',
             false
         );
 
         $context->expects($this->once())
-            ->method('getView')
-            ->will($this->returnValue($this->_view));
+            ->method('getResultFactory')
+            ->will($this->returnValue($this->resultFactory));
 
         $this->_controller = new \Magento\Contact\Controller\Index\Index(
             $context,
@@ -90,12 +93,12 @@ protected function setUp()
 
     public function testExecute()
     {
-        $this->_view->expects($this->once())
-            ->method('loadLayout');
-
-        $this->_view->expects($this->once())
-            ->method('renderLayout');
+        $resultStub = $this->getMockForAbstractClass(ResultInterface::class);
+        $this->resultFactory->expects($this->once())
+            ->method('create')
+            ->with(ResultFactory::TYPE_PAGE)
+            ->willReturn($resultStub);
 
-        $this->_controller->execute();
+        $this->assertSame($resultStub, $this->_controller->execute());
     }
 }

app/code/Magento/User/Controller/Adminhtml/User/Role/Editrolegrid.php

@@ -6,16 +6,17 @@
  */
 namespace Magento\User\Controller\Adminhtml\User\Role;
 
+use Magento\Framework\Controller\ResultFactory;
+
 class Editrolegrid extends \Magento\User\Controller\Adminhtml\User\Role
 {
     /**
      * Action for ajax request from assigned users grid
      *
-     * @return void
+     * @return \Magento\Framework\Controller\ResultInterface
      */
     public function execute()
     {
-        $this->_view->loadLayout();
-        $this->_view->renderLayout();
+        return $this->resultFactory->create(ResultFactory::TYPE_PAGE);
     }
 }