Bug 1874334 - Add worker related fuzzing finding to OPFS crashtest suite; r=dom-storage-reviewers,jari

Differential Revision: https://phabricator.services.mozilla.com/D205574

dom/fs/test/crashtests/1874334-2.html

@@ -0,0 +1,8 @@
+<script>
+document.addEventListener("DOMContentLoaded", async () => {
+    await self.navigator.serviceWorker.register("sw1874334-2.js?318", { })
+    await self.navigator.serviceWorker.register("sw1874334-2.js?363", { })
+    await self.navigator.serviceWorker.register("sw1874334-2.js?87", { })
+    await self.fetch("missing", {"headers": []})
+})
+</script>

dom/fs/test/crashtests/crashtests.list

@@ -10,3 +10,4 @@ load 1841702.html
 HTTP load 1844619.html
 HTTP load 1858820.html
 load 1874334.html
+HTTP load 1874334-2.html

dom/fs/test/crashtests/sw1874334-2.js

@@ -0,0 +1,12 @@
+(async () => {
+    let arr = new ArrayBuffer(43109)
+    let blob = new Blob([arr, arr, arr, arr, arr])
+    let req = new Request("missing", {"headers": []})
+    let dir = await self.navigator.storage.getDirectory()
+    let file = new File([blob, arr], "", { })
+    let handle = await dir.getFileHandle("514600c6-596b-4676-ab0c-3e6f1e86759f", {"create": true})
+    let wfs = await handle.createWritable({"keepExistingData": true})
+    await handle.createWritable({"keepExistingData": true})
+    try { await req.json(arr, {"headers": []}) } catch (e) {}
+    try { await file.stream().pipeTo(wfs, { }) } catch (e) {}
+})()