Add Devel Menu's links as a webprofiler datacollector

+++ b/webprofiler/src/DataCollector/DevelDataCollector.php
@@ -0,0 +1,108 @@
+    $manipulators = array(
+      array('callable' => 'menu.default_tree_manipulators:checkAccess'),
+      array('callable' => 'menu.default_tree_manipulators:generateIndexAndSort'),
+    );
+    $tree = $this->menuLinkTree->transform($tree, $manipulators);
+
+    $links = array();
+
+    foreach ($tree as $item) {
+      $links[] = array(
+        'title' => $item->link->getTitle(),
+        'description' => $item->link->getDescription(),
+        'url' => $item->link->getUrlObject()->toString(),
+      );
+    }

Top-level inaccessible links are *not* removed automatically (see DefaultMenuLinkTreeManipulators::checkAccess()); we should iterate over the links and exclude inaccessible links. Something like

foreach ($tree as $item) {
  if ($item->access->isAllowed()) {
   $links[] = array(
     'title' => $item->link->getTitle(),
     'description' => $item->link->getDescription(),
     'url' => $item->link->getUrlObject()->toString(),
    );
  }
}

otherwise looks good :)