diff --git a/testing/web-platform/meta/MANIFEST.json b/testing/web-platform/meta/MANIFEST.json
index 8815ba18535a..0fff97886266 100644
--- a/testing/web-platform/meta/MANIFEST.json
+++ b/testing/web-platform/meta/MANIFEST.json
@@ -292784,11 +292784,6 @@
      {}
     ]
    ],
-   "service-workers/cache-storage/script-tests/cache-abort.js": [
-    [
-     {}
-    ]
-   ],
    "service-workers/cache-storage/script-tests/cache-add.js": [
     [
      {}
@@ -361984,12 +361979,6 @@
      }
     ]
    ],
-   "service-workers/cache-storage/serviceworker/cache-abort.https.html": [
-    [
-     "/service-workers/cache-storage/serviceworker/cache-abort.https.html",
-     {}
-    ]
-   ],
    "service-workers/cache-storage/serviceworker/cache-add.https.html": [
     [
      "/service-workers/cache-storage/serviceworker/cache-add.https.html",
@@ -362068,12 +362057,6 @@
      {}
     ]
    ],
-   "service-workers/cache-storage/window/cache-abort.https.html": [
-    [
-     "/service-workers/cache-storage/window/cache-abort.https.html",
-     {}
-    ]
-   ],
    "service-workers/cache-storage/window/cache-add.https.html": [
     [
      "/service-workers/cache-storage/window/cache-add.https.html",
@@ -362154,12 +362137,6 @@
      }
     ]
    ],
-   "service-workers/cache-storage/worker/cache-abort.https.html": [
-    [
-     "/service-workers/cache-storage/worker/cache-abort.https.html",
-     {}
-    ]
-   ],
    "service-workers/cache-storage/worker/cache-add.https.html": [
     [
      "/service-workers/cache-storage/worker/cache-add.https.html",
@@ -595511,10 +595488,6 @@
    "fc315489c4d337f7cf8395beb4005be9c12da9d6",
    "support"
   ],
-  "service-workers/cache-storage/script-tests/cache-abort.js": [
-   "7c381e34a8e1444ad82645caf05ec8cbfe8360f8",
-   "support"
-  ],
   "service-workers/cache-storage/script-tests/cache-add.js": [
    "5807ce231254f89d9e5f2fc43955a8dda5bd865d",
    "support"
@@ -595551,10 +595524,6 @@
    "43a44ad35e90ce759de7a855f75b149b756029b4",
    "support"
   ],
-  "service-workers/cache-storage/serviceworker/cache-abort.https.html": [
-   "6b44436f3b2e1a463e64f3f5fc343086a295a975",
-   "testharness"
-  ],
   "service-workers/cache-storage/serviceworker/cache-add.https.html": [
    "294e76cb7b067b17fc9a0850bdab1d6e169cc25a",
    "testharness"
@@ -595595,10 +595564,6 @@
    "ef598649e75e3c8736729d7e233982748e31eb79",
    "testharness"
   ],
-  "service-workers/cache-storage/window/cache-abort.https.html": [
-   "2143ee1d78242bd2d055f6ea1b63a1becff657fe",
-   "testharness"
-  ],
   "service-workers/cache-storage/window/cache-add.https.html": [
    "d2c83935c4f413fa6f9459843a9ba669deb0e8ce",
    "testharness"
@@ -595639,10 +595604,6 @@
    "dafb0d18e02c256a78188fdaf6997a1abd58b215",
    "testharness"
   ],
-  "service-workers/cache-storage/worker/cache-abort.https.html": [
-   "d67a78e50008a587d0b349daaacafc25a18cfd5b",
-   "testharness"
-  ],
   "service-workers/cache-storage/worker/cache-add.https.html": [
    "2cbea6be14f2f1852993be40744cac72a7fc62f6",
    "testharness"
diff --git a/testing/web-platform/tests/service-workers/cache-storage/script-tests/cache-abort.js b/testing/web-platform/tests/service-workers/cache-storage/script-tests/cache-abort.js
deleted file mode 100644
index ec4130fded29..000000000000
--- a/testing/web-platform/tests/service-workers/cache-storage/script-tests/cache-abort.js
+++ /dev/null
@@ -1,81 +0,0 @@
-if (self.importScripts) {
-  importScripts('/resources/testharness.js');
-  importScripts('../resources/test-helpers.js');
-  importScripts('/common/utils.js');
-}
-
-// We perform the same tests on put, add, addAll. Parameterise the tests to
-// reduce repetition.
-const methodsToTest = {
-  put: async (cache, request) => {
-    const response = await fetch(request);
-    return cache.put(request, response);
-  },
-  add: async (cache, request) => cache.add(request),
-  addAll: async (cache, request) => cache.addAll([request]),
-};
-
-for (const method in methodsToTest) {
-  const perform = methodsToTest[method];
-
-  cache_test(async (cache, test) => {
-    const controller = new AbortController();
-    const signal = controller.signal;
-    controller.abort();
-    const request = new Request('../resources/simple.txt', { signal });
-    return promise_rejects(test, 'AbortError', perform(cache, request),
-                          `${method} should reject`);
-  }, `${method}() on an already-aborted request should reject with AbortError`);
-
-  cache_test(async (cache, test) => {
-    const controller = new AbortController();
-    const signal = controller.signal;
-    const request = new Request('../resources/simple.txt', { signal });
-    const promise = perform(cache, request);
-    controller.abort();
-    return promise_rejects(test, 'AbortError', promise,
-                          `${method} should reject`);
-  }, `${method}() synchronously followed by abort should reject with ` +
-     `AbortError`);
-
-  cache_test(async (cache, test) => {
-    const controller = new AbortController();
-    const signal = controller.signal;
-    const stateKey = token();
-    const abortKey = token();
-    const request = new Request(
-        `../../../fetch/api/resources/infinite-slow-response.py?stateKey=${stateKey}&abortKey=${abortKey}`,
-        { signal });
-
-    const promise = perform(cache, request);
-
-    // Wait for the server to start sending the response body.
-    let opened = false;
-    do {
-      // Normally only one fetch to 'stash-take' is needed, but the fetches
-      // will be served in reverse order sometimes
-      // (i.e., 'stash-take' gets served before 'infinite-slow-response').
-
-      const response =
-            await fetch(`../../../fetch/api/resources/stash-take.py?key=${stateKey}`);
-      const body = await response.json();
-      if (body === 'open') opened = true;
-    } while (!opened);
-
-    // Sadly the above loop cannot guarantee that the browser has started
-    // processing the response body. This delay is needed to make the test
-    // failures non-flaky in Chrome version 66. My deepest apologies.
-    await new Promise(resolve => setTimeout(resolve, 250));
-
-    controller.abort();
-
-    await promise_rejects(test, 'AbortError', promise,
-                          `${method} should reject`);
-
-    // infinite-slow-response.py doesn't know when to stop.
-    return fetch(`../../../fetch/api/resources/stash-put.py?key=${abortKey}`);
-  }, `${method}() followed by abort after headers received should reject ` +
-     `with AbortError`);
-}
-
-done();
diff --git a/testing/web-platform/tests/service-workers/cache-storage/serviceworker/cache-abort.https.html b/testing/web-platform/tests/service-workers/cache-storage/serviceworker/cache-abort.https.html
deleted file mode 100644
index b4f203b3333b..000000000000
--- a/testing/web-platform/tests/service-workers/cache-storage/serviceworker/cache-abort.https.html
+++ /dev/null
@@ -1,9 +0,0 @@
-<!DOCTYPE html>
-<title>Cache Storage: Abort</title>
-<link rel="help" href="https://fetch.spec.whatwg.org/#request-signal">
-<script src="/resources/testharness.js"></script>
-<script src="/resources/testharnessreport.js"></script>
-<script src="../../service-worker/resources/test-helpers.sub.js"></script>
-<script>
-service_worker_test('../script-tests/cache-abort.js');
-</script>
diff --git a/testing/web-platform/tests/service-workers/cache-storage/window/cache-abort.https.html b/testing/web-platform/tests/service-workers/cache-storage/window/cache-abort.https.html
deleted file mode 100644
index 935023dbe6e0..000000000000
--- a/testing/web-platform/tests/service-workers/cache-storage/window/cache-abort.https.html
+++ /dev/null
@@ -1,8 +0,0 @@
-<!DOCTYPE html>
-<title>Cache Storage: Abort</title>
-<link rel="help" href="https://fetch.spec.whatwg.org/#request-signal">
-<script src="/resources/testharness.js"></script>
-<script src="/resources/testharnessreport.js"></script>
-<script src="../resources/test-helpers.js"></script>
-<script src="/common/utils.js"></script>
-<script src="../script-tests/cache-abort.js"></script>
diff --git a/testing/web-platform/tests/service-workers/cache-storage/worker/cache-abort.https.html b/testing/web-platform/tests/service-workers/cache-storage/worker/cache-abort.https.html
deleted file mode 100644
index ccd71910dc5e..000000000000
--- a/testing/web-platform/tests/service-workers/cache-storage/worker/cache-abort.https.html
+++ /dev/null
@@ -1,8 +0,0 @@
-<!DOCTYPE html>
-<title>>Cache Storage: Abort</title>
-<link rel="help" href="https://fetch.spec.whatwg.org/#request-signal">
-<script src="/resources/testharness.js"></script>
-<script src="/resources/testharnessreport.js"></script>
-<script>
-fetch_tests_from_worker(new Worker('../script-tests/cache-abort.js'));
-</script>