Suppress all existing promise races

To suppress the races, we mark these invocations with `void` per
the instructions of `no-floating-promises`. This explicitly marks
these statements as side-effect promises.

Engineers can later analyze these void statements and determine
whether the promise races are intentional or accidental.

[email protected]

Bug: 1239617
Change-Id: I6b7a24cf21029d6ff73b112b3e8255ebab8c60ec
Reviewed-on: https://chromium-review.googlesource.com/c/devtools/devtools-frontend/+/3366467
Reviewed-by: Jack Franklin <[email protected]>
Commit-Queue: Tim Van der Lippe <[email protected]>
Auto-Submit: Tim Van der Lippe <[email protected]>
diff --git a/test/e2e/elements/accessibility-tree_test.ts b/test/e2e/elements/accessibility-tree_test.ts
index 173502c..a52f2dc 100644
--- a/test/e2e/elements/accessibility-tree_test.ts
+++ b/test/e2e/elements/accessibility-tree_test.ts
@@ -19,7 +19,7 @@
     await enableExperiment('fullAccessibilityTree');
     await goToResource('elements/accessibility-iframe-page.html');
     await toggleAccessibilityTree();
-    waitForAria('RootWebArea\xa0"Page with nested iframe" [role="treeitem"]');
+    void waitForAria('RootWebArea\xa0"Page with nested iframe" [role="treeitem"]');
     const iframeDoc = await waitForAria(
         'RootWebArea\xa0"Simple page with aria labeled element"\xa0focusable:\xa0true [role="treeitem"]');
     assertNotNullOrUndefined(iframeDoc);