Tidy up class references

lib/internal/Magento/Framework/AclFactory.php

@@ -31,6 +31,6 @@ public function __construct(\Magento\Framework\ObjectManagerInterface $objectMan
      */
     public function create()
     {
-        return $this->_objectManager->create('Magento\Framework\Acl');
+        return $this->_objectManager->create(Acl::class);
     }
 }

lib/internal/Magento/Framework/Controller/ResultFactory.php

@@ -30,12 +30,12 @@ class ResultFactory
      * @var array
      */
     protected $typeMap = [
-        self::TYPE_JSON     => 'Magento\Framework\Controller\Result\Json',
-        self::TYPE_RAW      => 'Magento\Framework\Controller\Result\Raw',
-        self::TYPE_REDIRECT => 'Magento\Framework\Controller\Result\Redirect',
-        self::TYPE_FORWARD  => 'Magento\Framework\Controller\Result\Forward',
-        self::TYPE_LAYOUT   => 'Magento\Framework\View\Result\Layout',
-        self::TYPE_PAGE     => 'Magento\Framework\View\Result\Page',
+        self::TYPE_JSON     => Result\Json::class,
+        self::TYPE_RAW      => Result\Raw::class,
+        self::TYPE_REDIRECT => Result\Redirect::class,
+        self::TYPE_FORWARD  => Result\Forward::class,
+        self::TYPE_LAYOUT   => \Magento\Framework\View\Result\Layout::class,
+        self::TYPE_PAGE     => \Magento\Framework\View\Result\Page::class,
     ];
 
     /**

lib/internal/Magento/Framework/CurrencyFactory.php

@@ -11,7 +11,7 @@
 class CurrencyFactory
 {
     /**
-     * @var \Magento\Framework\ObjectManagerInterface
+     * @var ObjectManagerInterface
      */
     protected $_objectManager = null;
 
@@ -21,10 +21,10 @@ class CurrencyFactory
     protected $_instanceName = null;
 
     /**
-     * @param \Magento\Framework\ObjectManagerInterface $objectManager
+     * @param ObjectManagerInterface $objectManager
      * @param string $instanceName
      */
-    public function __construct(\Magento\Framework\ObjectManagerInterface $objectManager, $instanceName = 'Magento\Framework\CurrencyInterface')
+    public function __construct(ObjectManagerInterface $objectManager, $instanceName = CurrencyInterface::class)
     {
         $this->_objectManager = $objectManager;
         $this->_instanceName = $instanceName;
@@ -34,7 +34,7 @@ public function __construct(\Magento\Framework\ObjectManagerInterface $objectMan
      * Create class instance with specified parameters
      *
      * @param array $data
-     * @return \Magento\Framework\CurrencyInterface
+     * @return CurrencyInterface
      */
     public function create(array $data = [])
     {

lib/internal/Magento/Framework/EventFactory.php

@@ -26,6 +26,6 @@ public function __construct(\Magento\Framework\ObjectManagerInterface $objectMan
      */
     public function create($arguments = [])
     {
-        return $this->_objectManager->create('Magento\Framework\Event', $arguments);
+        return $this->_objectManager->create(Event::class, $arguments);
     }
 }

lib/internal/Magento/Framework/FlagFactory.php

@@ -32,7 +32,7 @@ class FlagFactory
      */
     public function __construct(
         \Magento\Framework\ObjectManagerInterface $objectManager,
-        $instanceName = 'Magento\Framework\Flag'
+        $instanceName = Flag::class
     ) {
         $this->_objectManager = $objectManager;
         $this->_instanceName = $instanceName;

lib/internal/Magento/Framework/UrlFactory.php

@@ -11,7 +11,7 @@
 class UrlFactory
 {
     /**
-     * @var \Magento\Framework\ObjectManagerInterface
+     * @var ObjectManagerInterface
      */
     protected $_objectManager = null;
 
@@ -21,10 +21,10 @@ class UrlFactory
     protected $_instanceName = null;
 
     /**
-     * @param \Magento\Framework\ObjectManagerInterface $objectManager
+     * @param ObjectManagerInterface $objectManager
      * @param string $instanceName
      */
-    public function __construct(\Magento\Framework\ObjectManagerInterface $objectManager, $instanceName = 'Magento\Framework\UrlInterface')
+    public function __construct(ObjectManagerInterface $objectManager, $instanceName = UrlInterface::class)
     {
         $this->_objectManager = $objectManager;
         $this->_instanceName = $instanceName;
@@ -34,7 +34,7 @@ public function __construct(\Magento\Framework\ObjectManagerInterface $objectMan
      * Create Url instance with specified parameters
      *
      * @param array $data
-     * @return \Magento\Framework\UrlInterface
+     * @return UrlInterface
      */
     public function create(array $data = [])
     {

lib/internal/Magento/Framework/ValidatorFactory.php

@@ -10,7 +10,7 @@
  */
 class ValidatorFactory
 {
-    const DEFAULT_INSTANCE_NAME = 'Magento\Framework\Validator';
+    const DEFAULT_INSTANCE_NAME = Validator::class;
 
     /**
      * Object Manager instance