Update to Drupal 8.0.0-beta15. For more information, see: https://www.drupal.org/node/2563023

core/modules/quickedit/src/MetadataGenerator.php

@@ -89,10 +89,9 @@ class MetadataGenerator implements MetadataGeneratorInterface {
     $label = $items->getFieldDefinition()->getLabel();
     $editor = $this->editorManager->createInstance($editor_id);
     $metadata = array(
-      'label' => SafeMarkup::checkPlain($label),
+      'label' => $label,
       'access' => TRUE,
       'editor' => $editor_id,
-      'aria' => t('Entity @type @id, field @field', array('@type' => $entity->getEntityTypeId(), '@id' => $entity->id(), '@field' => $label)),
     );
     $custom_metadata = $editor->getMetadata($items);
     if (count($custom_metadata)) {

core/modules/quickedit/src/QuickEditController.php

@@ -216,7 +216,7 @@ class QuickEditController extends ControllerBase {
       $response->addCommand(new FieldFormSavedCommand($output, $other_view_modes));
     }
     else {
-      $output = (string) $this->renderer->renderRoot($form);
+      $output = $this->renderer->renderRoot($form);
       // When working with a hidden form, we don't want its CSS/JS to be loaded.
       if ($request->request->get('nocssjs') !== 'true') {
         $response->setAttachments($form['#attached']);
@@ -228,7 +228,7 @@ class QuickEditController extends ControllerBase {
         $status_messages = array(
           '#type' => 'status_messages'
         );
-        $response->addCommand(new FieldFormValidationErrorsCommand((string) $this->renderer->renderRoot($status_messages)));
+        $response->addCommand(new FieldFormValidationErrorsCommand($this->renderer->renderRoot($status_messages)));
       }
     }
 
@@ -255,7 +255,7 @@ class QuickEditController extends ControllerBase {
    *   The view mode the field should be rerendered in. Either an Entity Display
    *   view mode ID, or a custom one. See hook_quickedit_render_field().
    *
-   * @return string
+   * @return \Drupal\Component\Utility\SafeStringInterface
    *   Rendered HTML.
    *
    * @see hook_quickedit_render_field()
@@ -275,7 +275,7 @@ class QuickEditController extends ControllerBase {
       $output = $this->moduleHandler()->invoke($module, 'quickedit_render_field', $args);
     }
 
-    return (string) $this->renderer->renderRoot($output);
+    return $this->renderer->renderRoot($output);
   }
 
   /**

core/modules/quickedit/src/Tests/MetadataGeneratorTest.php

@@ -107,7 +107,6 @@ class MetadataGeneratorTest extends QuickEditTestBase {
       'access' => TRUE,
       'label' => 'Plain text field',
       'editor' => 'plain_text',
-      'aria' => 'Entity entity_test 1, field Plain text field',
     );
     $this->assertEqual($expected_1, $metadata_1, 'The correct metadata is generated for the first field.');
 
@@ -118,7 +117,6 @@ class MetadataGeneratorTest extends QuickEditTestBase {
       'access' => TRUE,
       'label' => 'Simple number field',
       'editor' => 'form',
-      'aria' => 'Entity entity_test 1, field Simple number field',
     );
     $this->assertEqual($expected_2, $metadata_2, 'The correct metadata is generated for the second field.');
   }
@@ -177,7 +175,6 @@ class MetadataGeneratorTest extends QuickEditTestBase {
       'access' => TRUE,
       'label' => 'Rich text field',
       'editor' => 'wysiwyg',
-      'aria' => 'Entity entity_test 1, field Rich text field',
       'custom' => array(
         'format' => 'full_html'
       ),

core/modules/quickedit/src/Tests/QuickEditLoadingTest.php

@@ -174,7 +174,6 @@ class QuickEditLoadingTest extends WebTestBase {
         'label' => 'Body',
         'access' => TRUE,
         'editor' => 'form',
-        'aria' => 'Entity node 1, field Body',
       )
     );
     $this->assertIdentical(Json::decode($response), $expected, 'The metadata HTTP request answers with the correct JSON response.');
@@ -333,7 +332,6 @@ class QuickEditLoadingTest extends WebTestBase {
         'label' => 'Title',
         'access' => TRUE,
         'editor' => 'plain_text',
-        'aria' => 'Entity node 1, field Title',
       )
     );
     $this->assertIdentical(Json::decode($response), $expected, 'The metadata HTTP request answers with the correct JSON response.');
@@ -514,7 +512,7 @@ class QuickEditLoadingTest extends WebTestBase {
       $ajax_commands = Json::decode($response);
       $this->assertIdentical(2, count($ajax_commands), 'The field form HTTP request results in two AJAX commands.');
       $this->assertIdentical('quickeditFieldFormValidationErrors', $ajax_commands[1]['command'], 'The second AJAX command is a quickeditFieldFormValidationErrors command.');
-      $this->assertTrue(strpos($ajax_commands[1]['data'], t('The content has either been modified by another user, or you have already submitted modifications. As a result, your changes cannot be saved.')), 'Error message returned to user.');
+      $this->assertTrue(strpos($ajax_commands[1]['data'], 'The content has either been modified by another user, or you have already submitted modifications. As a result, your changes cannot be saved.'), 'Error message returned to user.');
     }
   }