Issue #2143933 by tim.plunkett, pwolanin, dawehner: Add _title and _title_callback to all routes.

core/modules/action/action.routing.yml

 action.admin:
   path: '/admin/config/system/actions'
   defaults:
+    _title: 'Actions'
     _entity_list: 'action'
   requirements:
     _permission: 'administer actions'

core/modules/aggregator/aggregator.module

@@ -119,13 +119,9 @@ function aggregator_menu() {
     'route_name' => 'aggregator.categories',
   );
   $items['aggregator/categories/%aggregator_category'] = array(
-    'title callback' => '_aggregator_category_title',
-    'title arguments' => array(2),
     'route_name' => 'aggregator.category_view',
   );
   $items['aggregator/sources/%aggregator_feed'] = array(
-    'title callback' => 'entity_page_label',
-    'title arguments' => array(2),
     'route_name' => 'aggregator.feed_view',
   );
   $items['admin/config/services/aggregator/edit/feed/%aggregator_feed'] = array(
@@ -148,19 +144,6 @@ function aggregator_menu() {
   return $items;
 }
 
-/**
- * Title callback: Returns a title for aggregator category pages.
- *
- * @param $category
- *   An aggregator category.
- *
- * @return
- *   A string with the aggregator category title.
- */
-function _aggregator_category_title($category) {
-  return $category->title;
-}
-
 /**
  * Implements hook_permission().
  */

core/modules/aggregator/aggregator.routing.yml

@@ -10,6 +10,7 @@ aggregator.admin_settings:
   path: '/admin/config/services/aggregator/settings'
   defaults:
     _form: '\Drupal\aggregator\Form\SettingsForm'
+    _title: 'Settings'
   requirements:
     _permission: 'administer news feeds'
 
@@ -17,6 +18,7 @@ aggregator.feed_items_delete:
   path: '/admin/config/services/aggregator/remove/{aggregator_feed}'
   defaults:
     _entity_form: 'aggregator_feed.remove_items'
+    _title: 'Remove items'
   requirements:
     _permission: 'administer news feeds'
 
@@ -24,6 +26,7 @@ aggregator.feed_delete:
   path: '/admin/config/services/aggregator/delete/feed/{aggregator_feed}'
   defaults:
     _entity_form: 'aggregator_feed.delete'
+    _title: 'Delete feed'
   requirements:
     _permission: 'administer news feeds'
 
@@ -31,6 +34,7 @@ aggregator.feed_add:
   path: '/admin/config/services/aggregator/add/feed'
   defaults:
     _content: '\Drupal\aggregator\Controller\AggregatorController::feedAdd'
+    _title: 'Add feed'
   requirements:
     _permission: 'administer news feeds'
 
@@ -38,6 +42,7 @@ aggregator.feed_configure:
   path: '/aggregator/sources/{aggregator_feed}/configure'
   defaults:
     _entity_form: 'aggregator_feed.default'
+    _title: 'Configure'
   requirements:
     _permission: 'administer news feeds'
 
@@ -45,6 +50,7 @@ aggregator.feed_edit:
   path: '/admin/config/services/aggregator/edit/feed/{aggregator_feed}'
   defaults:
     _entity_form: 'aggregator_feed.default'
+    _title: 'Edit feed'
   requirements:
     _permission: 'administer news feeds'
 
@@ -52,6 +58,7 @@ aggregator.feed_refresh:
   path: '/admin/config/services/aggregator/update/{aggregator_feed}'
   defaults:
     _controller: '\Drupal\aggregator\Controller\AggregatorController::feedRefresh'
+    _title: 'Update items'
   requirements:
     _permission: 'administer news feeds'
 
@@ -59,6 +66,7 @@ aggregator.opml_add:
   path: '/admin/config/services/aggregator/add/opml'
   defaults:
     _form: '\Drupal\aggregator\Form\OpmlFeedAdd'
+    _title: 'Import OMPL'
   requirements:
     _permission: 'administer news feeds'
 
@@ -66,6 +74,7 @@ aggregator.feed_view:
   path: '/aggregator/sources/{aggregator_feed}'
   defaults:
     _content: '\Drupal\aggregator\Controller\AggregatorController::viewFeed'
+    _title_callback: '\Drupal\aggregator\Controller\AggregatorController::feedTitle'
   requirements:
     _permission: 'access news feeds'
 
@@ -73,6 +82,7 @@ aggregator.page_last:
   path: '/aggregator'
   defaults:
     _controller: '\Drupal\aggregator\Controller\AggregatorController::pageLast'
+    _title: 'Feed aggregator'
   requirements:
     _permission: 'access news feeds'
 
@@ -80,6 +90,7 @@ aggregator.sources:
   path: '/aggregator/sources'
   defaults:
     _content: '\Drupal\aggregator\Controller\AggregatorController::sources'
+    _title: 'Sources'
   requirements:
     _permission: 'access news feeds'
 
@@ -87,6 +98,7 @@ aggregator.categories:
   path: '/aggregator/categories'
   defaults:
     _content: '\Drupal\aggregator\Controller\AggregatorController::categories'
+    _title: 'Categories'
   requirements:
     _access_aggregator_categories: 'TRUE'
 
@@ -94,6 +106,7 @@ aggregator.category_view:
   path: '/aggregator/categories/{cid}'
   defaults:
     _content: '\Drupal\aggregator\Controller\AggregatorController::viewCategory'
+    _title_callback: '\Drupal\aggregator\Controller\AggregatorController::categoryTitle'
   requirements:
     _permission: 'access news feeds'
 
@@ -101,6 +114,7 @@ aggregator.category_edit:
   path: '/aggregator/categories/{cid}/configure'
   defaults:
     _form: '\Drupal\aggregator\Form\CategoryAdminForm'
+    _title: 'Configure'
   requirements:
     _permission: 'administer news feeds'
 
@@ -115,6 +129,7 @@ aggregator.category_delete:
   path: '/admin/config/services/aggregator/delete/category/{cid}'
   defaults:
     _form: '\Drupal\aggregator\Form\CategoryDeleteForm'
+    _title: 'Delete category'
   requirements:
     _permission: 'administer news feeds'
 
@@ -122,6 +137,7 @@ aggregator.category_add:
   path: '/admin/config/services/aggregator/add/category'
   defaults:
     _form: '\Drupal\aggregator\Form\CategoryAdminForm'
+    _title: 'Add category'
   requirements:
     _permission: 'administer news feeds'
 
@@ -129,6 +145,7 @@ aggregator.categorize_category_form:
   path: '/aggregator/categories/{cid}/categorize'
   defaults:
     _form: '\Drupal\aggregator\Form\CategorizeCategoryForm'
+    _title: 'Categorize'
   requirements:
     _permission: 'administer news feeds'
 
@@ -136,6 +153,7 @@ aggregator.categorize_feed_form:
   path: '/aggregator/sources/{aggregator_feed}/categorize'
   defaults:
     _form: '\Drupal\aggregator\Form\CategorizeFeedForm'
+    _title: 'Categorize'
   requirements:
     _permission: 'administer news feeds'
 

core/modules/aggregator/lib/Drupal/aggregator/Controller/AggregatorController.php

@@ -7,6 +7,7 @@
 
 namespace Drupal\aggregator\Controller;
 
+use Drupal\Component\Utility\Xss;
 use Drupal\Core\Controller\ControllerBase;
 use Drupal\Core\DependencyInjection\ContainerInjectionInterface;
 use Drupal\aggregator\CategoryStorageControllerInterface;
@@ -92,7 +93,6 @@ public function viewFeed(FeedInterface $aggregator_feed) {
     $items = $entity_manager->getStorageController('aggregator_item')->loadByFeed($aggregator_feed->id());
     // Print the feed items.
     $build = $this->buildPageList($items, $feed_source);
-    $build['#title'] = $aggregator_feed->label();
     return $build;
   }
 
@@ -106,10 +106,8 @@ public function viewFeed(FeedInterface $aggregator_feed) {
    *   The render array with list of items for the feed.
    */
   public function viewCategory($cid) {
-    $category = $this->categoryStorage->load($cid);
     $items = $this->entityManager()->getStorageController('aggregator_item')->loadByCategory($cid);
     $build = $this->buildPageList($items);
-    $build['#title'] = $category->title;
     return $build;
   }
 
@@ -384,4 +382,31 @@ public function opmlPage($cid = NULL) {
     return $response;
   }
 
+  /**
+   * Route title callback.
+   *
+   * @param \Drupal\aggregator\FeedInterface $aggregator_feed
+   *   The aggregator feed.
+   *
+   * @return string
+   *   The feed label.
+   */
+  public function feedTitle(FeedInterface $aggregator_feed) {
+    return Xss::filter($aggregator_feed->label());
+  }
+
+  /**
+   * Route title callback.
+   *
+   * @param int $cid
+   *   The category ID.
+   *
+   * @return string
+   *   The category label.
+   */
+  public function categoryTitle($cid) {
+    $category = $this->categoryStorage->load($cid);
+    return Xss::filter($category->title);
+  }
+
 }

core/modules/ban/ban.routing.yml

@@ -2,6 +2,7 @@ ban.admin_page:
   path: '/admin/config/people/ban/{default_ip}'
   defaults:
     _form: '\Drupal\ban\Form\BanAdmin'
+    _title: 'IP address bans'
     default_ip: ''
   requirements:
     _permission: 'ban IP addresses'
@@ -10,5 +11,6 @@ ban.delete:
   path: '/admin/config/people/ban/delete/{ban_id}'
   defaults:
     _form: '\Drupal\ban\Form\BanDelete'
+    _title: 'Delete IP address'
   requirements:
     _permission: 'ban IP addresses'

core/modules/block/block.routing.yml

@@ -25,6 +25,7 @@ block.admin_display:
   path: '/admin/structure/block'
   defaults:
     _content: '\Drupal\block\Controller\BlockListController::listing'
+    _title: 'Block layout'
   requirements:
     _permission: 'administer blocks'
 

core/modules/book/book.routing.yml

@@ -2,6 +2,7 @@ book.render:
   path: '/book'
   defaults:
     _content: '\Drupal\book\Controller\BookController::bookRender'
+    _title: 'Books'
   requirements:
     _permission: 'access content'
 
@@ -9,6 +10,7 @@ book.admin:
   path: '/admin/structure/book'
   defaults:
     _content: '\Drupal\book\Controller\BookController::adminOverview'
+    _title: 'Books'
   requirements:
     _permission: 'administer book outlines'
 
@@ -16,6 +18,7 @@ book.settings:
   path: '/admin/structure/book/settings'
   defaults:
     _form: '\Drupal\book\Form\BookSettingsForm'
+    _title: 'Books'
   requirements:
     _permission: 'administer site configuration'
 
@@ -31,6 +34,7 @@ book.outline:
   path: '/node/{node}/outline'
   defaults:
     _entity_form: 'node.book_outline'
+    _title: 'Outline'
   requirements:
     _permission: 'administer book outlines'
     _entity_access: 'node.view'

core/modules/comment/comment.routing.yml

@@ -69,6 +69,7 @@ comment.bundle_list:
   path: '/admin/structure/comments'
   defaults:
     _content: 'Drupal\comment\Controller\AdminController::overviewBundles'
+    _title: 'Comment forms'
   requirements:
     _permission: 'administer comments'
 

core/modules/contact/contact.routing.yml

@@ -10,6 +10,7 @@ contact.category_list:
   path: '/admin/structure/contact'
   defaults:
     _entity_list: 'contact_category'
+    _title: 'Contact form categories'
   requirements:
     _permission: 'administer contact forms'
 
@@ -25,6 +26,7 @@ contact.category_edit:
   path: '/admin/structure/contact/manage/{contact_category}'
   defaults:
     _entity_form: contact_category.edit
+    _title: 'Edit contact category'
   requirements:
     _entity_access: contact_category.update
 

core/modules/dblog/dblog.routing.yml

@@ -2,6 +2,7 @@ dblog.overview:
   path: '/admin/reports/dblog'
   defaults:
     _content: '\Drupal\dblog\Controller\DbLogController::overview'
+    _title: 'Recent log messages'
   requirements:
     _permission: 'access site reports'
 
@@ -9,6 +10,7 @@ dblog.event:
   path: '/admin/reports/event/{event_id}'
   defaults:
     _content: '\Drupal\dblog\Controller\DbLogController::eventDetails'
+    _title: 'Details'
   requirements:
     _permission: 'access site reports'
 

core/modules/entity/entity.routing.yml

@@ -2,6 +2,7 @@ entity.display_mode:
   path: '/admin/structure/display-modes'
   defaults:
     _content: '\Drupal\system\Controller\SystemController::systemAdminMenuBlockPage'
+    _title: 'Display modes'
   requirements:
     _permission: 'administer display modes'
 
@@ -9,6 +10,7 @@ entity.view_mode_list:
   path: '/admin/structure/display-modes/view'
   defaults:
     _entity_list: 'view_mode'
+    _title: 'View modes'
   requirements:
     _permission: 'administer display modes'
 
@@ -24,6 +26,7 @@ entity.view_mode_add_type:
   path: '/admin/structure/display-modes/view/add/{entity_type}'
   defaults:
     _entity_form: 'view_mode.add'
+    _title: 'Add view mode'
   requirements:
     _permission: 'administer display modes'
 
@@ -31,6 +34,7 @@ entity.view_mode_edit:
   path: '/admin/structure/display-modes/view/manage/{view_mode}'
   defaults:
     _entity_form: 'view_mode.edit'
+    _title: 'Edit view mode'
   requirements:
     _entity_access: 'view_mode.update'
 
@@ -38,6 +42,7 @@ entity.view_mode_delete:
   path: '/admin/structure/display-modes/view/manage/{view_mode}/delete'
   defaults:
     _entity_form: 'view_mode.delete'
+    _title: 'Delete view mode'
   requirements:
     _entity_access: 'view_mode.delete'
 
@@ -45,6 +50,7 @@ entity.form_mode_list:
   path: '/admin/structure/display-modes/form'
   defaults:
     _entity_list: 'form_mode'
+    _title: 'Form modes'
   requirements:
     _permission: 'administer display modes'
 
@@ -60,6 +66,7 @@ entity.form_mode_add_type:
   path: '/admin/structure/display-modes/form/add/{entity_type}'
   defaults:
     _entity_form: 'form_mode.add'
+    _title: 'Add form mode'
   requirements:
     _permission: 'administer display modes'
 
@@ -67,6 +74,7 @@ entity.form_mode_edit:
   path: '/admin/structure/display-modes/form/manage/{form_mode}'
   defaults:
     _entity_form: 'form_mode.edit'
+    _title: 'Edit form mode'
   requirements:
     _entity_access: 'form_mode.update'
 
@@ -74,5 +82,6 @@ entity.form_mode_delete:
   path: '/admin/structure/display-modes/form/manage/{form_mode}/delete'
   defaults:
     _entity_form: 'form_mode.delete'
+    _title: 'Delete form mode'
   requirements:
     _entity_access: 'form_mode.delete'

core/modules/field_ui/field_ui.routing.yml

@@ -2,5 +2,6 @@ field_ui.list:
   path: '/admin/reports/fields'
   defaults:
     _entity_list: 'field_entity'
+    _title: 'Field list'
   requirements:
     _permission: 'administer content types'

core/modules/filter/filter.routing.yml

@@ -2,6 +2,7 @@ filter.tips_all:
   path: '/filter/tips'
   defaults:
     _content: '\Drupal\filter\Controller\FilterController::filterTips'
+    _title: 'Compose tips'
   requirements:
     _access: 'TRUE'
 
@@ -9,6 +10,7 @@ filter.tips:
   path: '/filter/tips/{filter_format}'
   defaults:
     _content: '\Drupal\filter\Controller\FilterController::filterTips'
+    _title: 'Compose tips'
   requirements:
     _entity_access: 'filter_format.view'
 
@@ -40,6 +42,7 @@ filter.admin_disable:
   path: '/admin/config/content/formats/manage/{filter_format}/disable'
   defaults:
     _entity_form: 'filter_format.disable'
+    _title: 'Disable text format'
   requirements:
     _filter_disable_format_access: 'TRUE'
     _permission: 'administer filters'

core/modules/forum/forum.routing.yml

@@ -2,6 +2,7 @@ forum.delete:
   path: '/admin/structure/forum/delete/forum/{taxonomy_term}'
   defaults:
     _form: '\Drupal\forum\Form\DeleteForm'
+    _title: 'Delete forum'
   requirements:
     _permission: 'administer forums'
 
@@ -9,6 +10,7 @@ forum.settings:
   path: '/admin/structure/forum/settings'
   defaults:
     _form: '\Drupal\forum\ForumSettingsForm'
+    _title: 'Forums'
   requirements:
     _permission: 'administer forums'
 
@@ -16,6 +18,7 @@ forum.index:
   path: '/forum'
   defaults:
     _content: '\Drupal\forum\Controller\ForumController::forumIndex'
+    _title: 'Forums'
   requirements:
     _permission: 'access content'
 
@@ -30,6 +33,7 @@ forum.add_container:
   path: '/admin/structure/forum/add/container'
   defaults:
     _content: '\Drupal\forum\Controller\ForumController::addContainer'
+    _title: 'Add container'
   requirements:
     _permission: 'administer forums'
 
@@ -37,6 +41,7 @@ forum.add_forum:
   path: '/admin/structure/forum/add/forum'
   defaults:
     _content: '\Drupal\forum\Controller\ForumController::addForum'
+    _title: 'Add forum'
   requirements:
     _permission: 'administer forums'
 
@@ -44,6 +49,7 @@ forum.edit_container:
   path: '/admin/structure/forum/edit/container/{taxonomy_term}'
   defaults:
     _entity_form: 'taxonomy_term.container'
+    _title: 'Edit container'
   requirements:
     _permission: 'administer forums'
 
@@ -51,6 +57,7 @@ forum.edit_forum:
   path: '/admin/structure/forum/edit/forum/{taxonomy_term}'
   defaults:
     _entity_form: 'taxonomy_term.forum'
+    _title: 'Edit forum'
   requirements:
     _permission: 'administer forums'
 
@@ -58,5 +65,6 @@ forum.overview:
   path: '/admin/structure/forum'
   defaults:
     _form: '\Drupal\forum\Form\Overview'
+    _title: 'Forums'
   requirements:
     _permission: 'administer forums'

core/modules/help/help.routing.yml

@@ -2,6 +2,7 @@ help.main:
   path: '/admin/help'
   defaults:
     _content: '\Drupal\help\Controller\HelpController::helpMain'
+    _title: 'Help'
   requirements:
     _permission: 'access administration pages'
 
@@ -9,5 +10,6 @@ help.page:
   path: '/admin/help/{name}'
   defaults:
     _content: '\Drupal\help\Controller\HelpController::helpPage'
+    _title: 'Help'
   requirements:
     _permission: 'access administration pages'

core/modules/image/image.routing.yml

@@ -2,6 +2,7 @@ image.style_add:
   path: '/admin/config/media/image-styles/add'
   defaults:
     _entity_form: image_style.add
+    _title: 'Add image style'
   requirements:
     _permission: 'administer image styles'
 
@@ -9,6 +10,7 @@ image.style_edit:
   path: '/admin/config/media/image-styles/manage/{image_style}'
   defaults:
     _entity_form: image_style.edit
+    _title: 'Edit style'
   requirements:
     _permission: 'administer image styles'
 
@@ -32,6 +34,7 @@ image.effect_delete:
   path: '/admin/config/media/image-styles/manage/{image_style}/effects/{image_effect}/delete'
   defaults:
     _form: '\Drupal\image\Form\ImageEffectDeleteForm'
+    _title: 'Delete image effect'
   requirements:
     _permission: 'administer image styles'
 
@@ -39,6 +42,7 @@ image.style_list:
   path: '/admin/config/media/image-styles'
   defaults:
     _entity_list: 'image_style'
+    _title: 'Image styles'
   requirements:
     _permission: 'administer image styles'
 
@@ -53,6 +57,7 @@ image.effect_add_form:
   path: '/admin/config/media/image-styles/manage/{image_style}/add/{image_effect}'
   defaults:
     _form: '\Drupal\image\Form\ImageEffectAddForm'
+    _title: 'Add image effect'
   requirements:
     _permission: 'administer image styles'
 
@@ -60,5 +65,6 @@ image.effect_edit_form:
   path: '/admin/config/media/image-styles/manage/{image_style}/effects/{image_effect}'
   defaults:
     _form: '\Drupal\image\Form\ImageEffectEditForm'
+    _title: 'Edit image effect'
   requirements:
     _permission: 'administer image styles'

core/modules/language/language.routing.yml

@@ -23,6 +23,7 @@ language.add:
   path: '/admin/config/regional/language/add'
   defaults:
     _entity_form: 'language_entity.add'
+    _title: 'Add language'
   requirements:
     _entity_create_access: 'language_entity'
 
@@ -38,6 +39,7 @@ language.admin_overview:
   path: '/admin/config/regional/language'
   defaults:
     _entity_list: 'language_entity'
+    _title: 'Languages'
   requirements:
     _permission: 'administer languages'
 
@@ -45,6 +47,7 @@ language.delete:
   path: '/admin/config/regional/language/delete/{language_entity}'
   defaults:
     _entity_form: 'language_entity.delete'
+    _title: 'Delete language'
   requirements:
     _entity_access: 'language_entity.delete'
 

core/modules/locale/locale.routing.yml

@@ -2,6 +2,7 @@ locale.settings:
   path: '/admin/config/regional/translate/settings'
   defaults:
     _form: 'Drupal\locale\Form\LocaleSettingsForm'
+    _title: 'Settings'
   requirements:
     _permission: 'translate interface'
 
@@ -16,6 +17,7 @@ locale.translate_page:
   path: '/admin/config/regional/translate'
   defaults:
     _content: 'Drupal\locale\Controller\LocaleController::translatePage'
+    _title: 'User interface translation'
   requirements:
     _permission: 'translate interface'
 

core/modules/menu/lib/Drupal/menu/Controller/MenuController.php

@@ -7,6 +7,7 @@
 
 namespace Drupal\menu\Controller;
 
+use Drupal\Component\Utility\Xss;
 use Drupal\Core\DependencyInjection\ContainerInjectionInterface;
 use Drupal\Core\Entity\EntityManagerInterface;
 use Drupal\menu_link\MenuLinkStorageControllerInterface;
@@ -96,4 +97,17 @@ public function addLink(MenuInterface $menu) {
     return $this->entityManager->getForm($menu_link);
   }
 
+  /**
+   * Route title callback.
+   *
+   * @param \Drupal\system\MenuInterface $menu
+   *   The menu entity.
+   *
+   * @return string
+   *   The menu label.
+   */
+  public function menuTitle(MenuInterface $menu) {
+    return Xss::filter($menu->label());
+  }
+
 }

core/modules/menu/menu.routing.yml

@@ -2,6 +2,7 @@ menu.settings:
   path: '/admin/structure/menu/settings'
   defaults:
     _form: 'Drupal\menu\MenuSettingsForm'
+    _title: 'Menus'
   requirements:
     _permission: 'administer menu'
 
@@ -32,6 +33,7 @@ menu.link_edit:
   path: '/admin/structure/menu/item/{menu_link}/edit'
   defaults:
     _entity_form: 'menu_link'
+    _title: 'Edit menu link'
   requirements:
     _entity_access: 'menu_link.update'
 
@@ -39,6 +41,7 @@ menu.link_reset:
   path: '/admin/structure/menu/item/{menu_link}/reset'
   defaults:
     _entity_form: 'menu_link.reset'
+    _title: 'Reset menu link'
   requirements:
     _entity_access: 'menu_link.reset'
 
@@ -46,6 +49,7 @@ menu.link_delete:
   path: '/admin/structure/menu/item/{menu_link}/delete'
   defaults:
     _entity_form: 'menu_link.delete'
+    _title: 'Delete menu link'
   requirements:
     _entity_access: 'menu_link.delete'
 
@@ -53,6 +57,7 @@ menu.menu_add:
   path: '/admin/structure/menu/add'
   defaults:
     _entity_form: 'menu.add'
+    _title: 'Add menu'
   requirements:
     _entity_create_access: 'menu'
 
@@ -60,6 +65,7 @@ menu.menu_edit:
   path: '/admin/structure/menu/manage/{menu}'
   defaults:
     _entity_form: 'menu.edit'
+    _title_callback: '\Drupal\menu\Controller\MenuController::menuTitle'
   requirements:
     _entity_access: 'menu.update'
 

core/modules/node/node.pages.inc

@@ -182,7 +182,7 @@ function theme_node_preview($variables) {
  * @deprecated Use \Drupal\node\Controller\NodeController::revisionOverview()
  */
 function node_revision_overview($node) {
-  drupal_set_title(t('Revisions for %title', array('%title' => $node->label())), PASS_THROUGH);
+  $build['#title'] = t('Revisions for %title', array('%title' => $node->label()));
 
   $header = array(t('Revision'), t('Operations'));
 

core/modules/node/node.routing.yml

@@ -74,6 +74,7 @@ node.revision_revert_confirm:
   path: '/node/{node}/revisions/{node_revision}/revert'
   defaults:
     _form: '\Drupal\node\Form\NodeRevisionRevertForm'
+    _title: 'Revert to earlier revision'
   requirements:
     _access_node_revision: 'update'
 
@@ -81,6 +82,7 @@ node.revision_delete_confirm:
   path: '/node/{node}/revisions/{node_revision}/delete'
   defaults:
     _form: '\Drupal\node\Form\NodeRevisionDeleteForm'
+    _title: 'Delete earlier revision'
   requirements:
     _access_node_revision: 'delete'
 
@@ -97,6 +99,7 @@ node.type_add:
   path: '/admin/structure/types/add'
   defaults:
     _entity_form: 'node_type.add'
+    _title: 'Add content type'
   requirements:
     _permission: 'administer content types'
 

core/modules/path/path.routing.yml

@@ -2,6 +2,7 @@ path.delete:
   path: '/admin/config/search/path/delete/{pid}'
   defaults:
     _form: '\Drupal\path\Form\DeleteForm'
+    _title: 'Delete alias'
   requirements:
     _permission: 'administer url aliases'
 

core/modules/picture/picture.routing.yml

@@ -2,6 +2,7 @@ picture.mapping_page:
   path: '/admin/config/media/picturemapping'
   defaults:
     _entity_list: 'picture_mapping'
+    _title: 'Picture mappings'
   requirements:
     _permission: 'administer pictures'
 
@@ -9,6 +10,7 @@ picture.mapping_page_add:
   path: '/admin/config/media/picturemapping/add'
   defaults:
     _entity_form: 'picture_mapping.add'
+    _title: 'Add picture mapping'
   requirements:
     _permission: 'administer pictures'
 
@@ -16,6 +18,7 @@ picture.mapping_page_edit:
   path: '/admin/config/media/picturemapping/{picture_mapping}'
   defaults: