Update to drupal 8.0.0-rc1. For more information, see https://www.drupal.org/node/2582663

core/modules/shortcut/migration_templates/d7_shortcut.yml

@@ -0,0 +1,26 @@
+id: d7_shortcut
+label: Shortcut links
+migration_tags:
+  - Drupal 7
+source:
+  plugin: d7_shortcut
+  constants:
+    uri_scheme: 'internal:/'
+process:
+  shortcut_set:
+     plugin: migration
+     migration: d7_shortcut_set
+     source: menu_name
+  title: link_title
+  weight: weight
+  link:
+    plugin: concat
+    source:
+      - 'constants/uri_scheme'
+      - link_path
+destination:
+  plugin: entity:shortcut
+migration_dependencies:
+  required:
+    - d7_shortcut_set
+    - d7_menu_links

core/modules/shortcut/migration_templates/d7_shortcut_set.yml

@@ -0,0 +1,20 @@
+id: d7_shortcut_set
+label: Shortcut sets
+migration_tags:
+  - Drupal 7
+source:
+  plugin: d7_shortcut_set
+process:
+  id:
+    -
+      plugin: static_map
+      bypass: true
+      source: set_name
+      map:
+        shortcut-set-1: default
+    -
+      plugin: machine_name
+      field: id
+  label: title
+destination:
+  plugin: entity:shortcut_set

core/modules/shortcut/migration_templates/d7_shortcut_set_users.yml

@@ -0,0 +1,25 @@
+id: d7_shortcut_set_users
+label: Shortcut set user mapping
+migration_tags:
+  - Drupal 7
+source:
+  plugin: d7_shortcut_set_users
+process:
+  uid:
+    -
+      plugin: migration
+      migration: d7_user
+      source: uid
+    -
+      plugin: skip_on_empty
+      method: row
+  set_name:
+    plugin: migration
+    migration: d7_shortcut_set
+    source: set_name
+destination:
+  plugin: shortcut_set_users
+migration_dependencies:
+  required:
+    - d7_shortcut_set
+    - d7_user