Upstream internal error suppression.

Co-authored-by: Phil Harnish <[email protected]>

Author: bicknellr

lib/utils/gestures.js

@@ -143,13 +143,20 @@ function matchingLabels(el) {
   // as the mouseCancellor code will handle ancstor labels
   if (!labels.length) {
     labels = [];
-    let root = el.getRootNode();
-    // if there is an id on `el`, check for all labels with a matching `for` attribute
-    if (el.id) {
-      let matching = root.querySelectorAll(`label[for = ${el.id}]`);
-      for (let i = 0; i < matching.length; i++) {
-        labels.push(/** @type {!HTMLLabelElement} */(matching[i]));
+    try {
+      let root = el.getRootNode();
+      // if there is an id on `el`, check for all labels with a matching `for` attribute
+      if (el.id) {
+        let matching = root.querySelectorAll(`label[for = ${el.id}]`);
+        for (let i = 0; i < matching.length; i++) {
+          labels.push(/** @type {!HTMLLabelElement} */(matching[i]));
+        }
       }
+    } catch (e) {
+      // Either:
+      // 1. el.getRootNode() failed.
+      // 2. el.id cannot be used in `querySelectorAll`
+      // In both cases, do nothing.
     }
   }
   return labels;