diff --git a/remote/marionette/driver.sys.mjs b/remote/marionette/driver.sys.mjs
index f4642e756e6a..6b5b1cf082e2 100644
--- a/remote/marionette/driver.sys.mjs
+++ b/remote/marionette/driver.sys.mjs
@@ -3346,23 +3346,6 @@ GeckoDriver.prototype.setPermission = async function (cmd) {
   const { descriptor, state, oneRealm = false } = cmd.parameters;
   const browsingContext = lazy.assert.open(this.getBrowsingContext());
 
-  // XXX: WPT should not have these but currently they do and we pass testing pref to
-  // pass them, see bug 1875837.
-  if (
-    ["clipboard-read", "clipboard-write"].includes(descriptor.name) &&
-    state === "granted"
-  ) {
-    if (
-      Services.prefs.getBoolPref("dom.events.testing.asyncClipboard", false)
-    ) {
-      // Okay, do nothing. The clipboard module will work without permission.
-      return;
-    }
-    throw new lazy.error.UnsupportedOperationError(
-      "setPermission: expected dom.events.testing.asyncClipboard to be set"
-    );
-  }
-
   // XXX: We currently depend on camera/microphone tests throwing UnsupportedOperationError,
   // the fix is ongoing in bug 1609427.
   if (["camera", "microphone"].includes(descriptor.name)) {
diff --git a/testing/web-platform/meta/clipboard-apis/__dir__.ini b/testing/web-platform/meta/clipboard-apis/__dir__.ini
index 7d7dc7068a1b..cc1333cccf5e 100644
--- a/testing/web-platform/meta/clipboard-apis/__dir__.ini
+++ b/testing/web-platform/meta/clipboard-apis/__dir__.ini
@@ -1 +1 @@
-prefs: [dom.events.asyncClipboard.clipboardItem: true, dom.events.asyncClipboard.readText: true, dom.events.testing.asyncClipboard:true, marionette.setpermission.enabled:true]
+prefs: [dom.events.asyncClipboard.clipboardItem: true, dom.events.asyncClipboard.readText: true, marionette.setpermission.enabled:true]
diff --git a/testing/web-platform/meta/clipboard-apis/async-html-script-removal.https.html.ini b/testing/web-platform/meta/clipboard-apis/async-html-script-removal.https.html.ini
index 9aac277f4178..cbbda46d7037 100644
--- a/testing/web-platform/meta/clipboard-apis/async-html-script-removal.https.html.ini
+++ b/testing/web-platform/meta/clipboard-apis/async-html-script-removal.https.html.ini
@@ -1,3 +1,6 @@
+# XXX(krosylight): The test fails on Android without the testing pref, see bug 1888179
+prefs: [dom.events.testing.asyncClipboard:true]
+
 [async-html-script-removal.https.html]
   [Verify write and read clipboard with scripts removed given text/html: <title>Title of the document</title> <script>const a = 5;</script> <p>Hello World</p>]
     expected:
diff --git a/testing/web-platform/meta/clipboard-apis/async-navigator-clipboard-basics.https.html.ini b/testing/web-platform/meta/clipboard-apis/async-navigator-clipboard-basics.https.html.ini
index 7eca35fb99f0..692255c319c2 100644
--- a/testing/web-platform/meta/clipboard-apis/async-navigator-clipboard-basics.https.html.ini
+++ b/testing/web-platform/meta/clipboard-apis/async-navigator-clipboard-basics.https.html.ini
@@ -1,3 +1,6 @@
+# XXX(krosylight): The test fails on Android without the testing pref, see bug 1888179
+prefs: [dom.events.testing.asyncClipboard:true]
+
 [async-navigator-clipboard-basics.https.html]
   expected:
     if (os == "android") and fission: [OK, TIMEOUT]
diff --git a/testing/web-platform/meta/clipboard-apis/async-navigator-clipboard-read-resource-load.https.html.ini b/testing/web-platform/meta/clipboard-apis/async-navigator-clipboard-read-resource-load.https.html.ini
index e2f2d2487d7e..952722c2ed67 100644
--- a/testing/web-platform/meta/clipboard-apis/async-navigator-clipboard-read-resource-load.https.html.ini
+++ b/testing/web-platform/meta/clipboard-apis/async-navigator-clipboard-read-resource-load.https.html.ini
@@ -1,3 +1,6 @@
+# XXX(krosylight): The test fails on Android without the testing pref, see bug 1888179
+prefs: [dom.events.testing.asyncClipboard:true]
+
 [async-navigator-clipboard-read-resource-load.https.html]
   expected:
     if (os == "android") and fission: [OK, TIMEOUT]
diff --git a/testing/web-platform/meta/clipboard-apis/async-navigator-clipboard-read-sanitize.https.html.ini b/testing/web-platform/meta/clipboard-apis/async-navigator-clipboard-read-sanitize.https.html.ini
index 84ec85604da4..145c9ef371b1 100644
--- a/testing/web-platform/meta/clipboard-apis/async-navigator-clipboard-read-sanitize.https.html.ini
+++ b/testing/web-platform/meta/clipboard-apis/async-navigator-clipboard-read-sanitize.https.html.ini
@@ -1,3 +1,6 @@
+# XXX(krosylight): The test fails on Android without the testing pref, see bug 1888179
+prefs: [dom.events.testing.asyncClipboard:true]
+
 [async-navigator-clipboard-read-sanitize.https.html]
   [Async Clipboard.read() should sanitize text/html]
     expected:
diff --git a/testing/web-platform/meta/clipboard-apis/async-navigator-clipboard-write-multiple.tentative.https.sub.html.ini b/testing/web-platform/meta/clipboard-apis/async-navigator-clipboard-write-multiple.tentative.https.sub.html.ini
index 7aa80650e888..dfdb81dd869e 100644
--- a/testing/web-platform/meta/clipboard-apis/async-navigator-clipboard-write-multiple.tentative.https.sub.html.ini
+++ b/testing/web-platform/meta/clipboard-apis/async-navigator-clipboard-write-multiple.tentative.https.sub.html.ini
@@ -1,3 +1,6 @@
+# XXX(krosylight): The test fails without the testing pref, see bug 1888182
+prefs: [dom.events.testing.asyncClipboard:true]
+
 [async-navigator-clipboard-write-multiple.tentative.https.sub.html]
   [clipboard.write() should cancel the prior pending one (same-origin iframe)]
     expected:
diff --git a/testing/web-platform/meta/clipboard-apis/async-unsanitized-standard-html-read-fail.tentative.https.html.ini b/testing/web-platform/meta/clipboard-apis/async-unsanitized-standard-html-read-fail.tentative.https.html.ini
index a0c1bddf23f4..cfdc752ea26d 100644
--- a/testing/web-platform/meta/clipboard-apis/async-unsanitized-standard-html-read-fail.tentative.https.html.ini
+++ b/testing/web-platform/meta/clipboard-apis/async-unsanitized-standard-html-read-fail.tentative.https.html.ini
@@ -1,3 +1,6 @@
+# XXX(krosylight): The test passes on Android without the testing pref and fails everywhere else
+prefs: [dom.events.testing.asyncClipboard:true]
+
 [async-unsanitized-standard-html-read-fail.tentative.https.html]
   [navigator.clipboard.read() fails for multiple unsanitized formats requested.]
     expected: FAIL
diff --git a/testing/web-platform/meta/clipboard-apis/async-write-html-read-html.https.html.ini b/testing/web-platform/meta/clipboard-apis/async-write-html-read-html.https.html.ini
index 248697533607..7a7a54208d21 100644
--- a/testing/web-platform/meta/clipboard-apis/async-write-html-read-html.https.html.ini
+++ b/testing/web-platform/meta/clipboard-apis/async-write-html-read-html.https.html.ini
@@ -1,3 +1,6 @@
+# XXX(krosylight): The test fails on Android without the testing pref, see bug 1888179
+prefs: [dom.events.testing.asyncClipboard:true]
+
 [async-write-html-read-html.https.html]
   expected:
     if (os == "android") and debug and fission: [OK, TIMEOUT]
diff --git a/testing/web-platform/meta/clipboard-apis/detached-iframe/write-read-on-detached-iframe.https.html.ini b/testing/web-platform/meta/clipboard-apis/detached-iframe/write-read-on-detached-iframe.https.html.ini
index 7b5992afa81c..ed862d84bda1 100644
--- a/testing/web-platform/meta/clipboard-apis/detached-iframe/write-read-on-detached-iframe.https.html.ini
+++ b/testing/web-platform/meta/clipboard-apis/detached-iframe/write-read-on-detached-iframe.https.html.ini
@@ -1,3 +1,6 @@
+# XXX(krosylight): The test fails on Android without the testing pref, see bug 1888179
+prefs: [dom.events.testing.asyncClipboard:true]
+
 [write-read-on-detached-iframe.https.html]
   expected:
     if (os == "android") and not debug: [TIMEOUT, CRASH]
diff --git a/testing/web-platform/meta/clipboard-apis/detached-iframe/writeText-readText-on-detached-iframe.https.html.ini b/testing/web-platform/meta/clipboard-apis/detached-iframe/writeText-readText-on-detached-iframe.https.html.ini
index f5e7ca02d32a..b0b6996d98b5 100644
--- a/testing/web-platform/meta/clipboard-apis/detached-iframe/writeText-readText-on-detached-iframe.https.html.ini
+++ b/testing/web-platform/meta/clipboard-apis/detached-iframe/writeText-readText-on-detached-iframe.https.html.ini
@@ -1,3 +1,6 @@
+# XXX(krosylight): The test fails on Android without the testing pref, see bug 1888179
+prefs: [dom.events.testing.asyncClipboard:true]
+
 [writeText-readText-on-detached-iframe.https.html]
   expected:
     if (os == "android") and not debug: [TIMEOUT, CRASH]
diff --git a/testing/web-platform/meta/clipboard-apis/feature-policy/clipboard-read/clipboard-read-enabled-by-feature-policy.tentative.https.sub.html.ini b/testing/web-platform/meta/clipboard-apis/feature-policy/clipboard-read/clipboard-read-enabled-by-feature-policy.tentative.https.sub.html.ini
index 022fd394a56f..a5acbde11ea9 100644
--- a/testing/web-platform/meta/clipboard-apis/feature-policy/clipboard-read/clipboard-read-enabled-by-feature-policy.tentative.https.sub.html.ini
+++ b/testing/web-platform/meta/clipboard-apis/feature-policy/clipboard-read/clipboard-read-enabled-by-feature-policy.tentative.https.sub.html.ini
@@ -1,3 +1,6 @@
+# XXX(krosylight): The test fails without the testing pref, see bug 1888182
+prefs: [dom.events.testing.asyncClipboard:true]
+
 [clipboard-read-enabled-by-feature-policy.tentative.https.sub.html]
   expected:
     if (os == "android") and debug and fission: [OK, TIMEOUT]
diff --git a/testing/web-platform/meta/clipboard-apis/feature-policy/clipboard-read/clipboard-read-enabled-on-self-origin-by-feature-policy.tentative.https.sub.html.ini b/testing/web-platform/meta/clipboard-apis/feature-policy/clipboard-read/clipboard-read-enabled-on-self-origin-by-feature-policy.tentative.https.sub.html.ini
index e2a3882b8086..cbf2f06cc1c9 100644
--- a/testing/web-platform/meta/clipboard-apis/feature-policy/clipboard-read/clipboard-read-enabled-on-self-origin-by-feature-policy.tentative.https.sub.html.ini
+++ b/testing/web-platform/meta/clipboard-apis/feature-policy/clipboard-read/clipboard-read-enabled-on-self-origin-by-feature-policy.tentative.https.sub.html.ini
@@ -1,3 +1,6 @@
+# XXX(krosylight): The test fails without the testing pref, see bug 1888182
+prefs: [dom.events.testing.asyncClipboard:true]
+
 [clipboard-read-enabled-on-self-origin-by-feature-policy.tentative.https.sub.html]
   expected:
     if (os == "android") and debug and fission: [OK, TIMEOUT]
diff --git a/testing/web-platform/meta/clipboard-apis/permissions/readText-denied.https.html.ini b/testing/web-platform/meta/clipboard-apis/permissions/readText-denied.https.html.ini
index a1571c251e36..f4256f800ad7 100644
--- a/testing/web-platform/meta/clipboard-apis/permissions/readText-denied.https.html.ini
+++ b/testing/web-platform/meta/clipboard-apis/permissions/readText-denied.https.html.ini
@@ -1,3 +1,6 @@
+# XXX(krosylight): The test fails without the testing pref, see bug 1888182
+prefs: [dom.events.testing.asyncClipboard:true]
+
 [readText-denied.https.html]
   expected:
     if (os == "android") and not debug: [OK, CRASH]
diff --git a/testing/web-platform/meta/clipboard-apis/permissions/readText-granted.https.html.ini b/testing/web-platform/meta/clipboard-apis/permissions/readText-granted.https.html.ini
index eeb3a5255060..e6aa89e3d118 100644
--- a/testing/web-platform/meta/clipboard-apis/permissions/readText-granted.https.html.ini
+++ b/testing/web-platform/meta/clipboard-apis/permissions/readText-granted.https.html.ini
@@ -1,3 +1,6 @@
+# XXX(krosylight): The test fails without the testing pref, see bug 1888182
+prefs: [dom.events.testing.asyncClipboard:true]
+
 [readText-granted.https.html]
   expected:
     if (os == "android") and not debug: [OK, CRASH]
diff --git a/testing/web-platform/meta/clipboard-apis/text-write-read/async-write-read.https.html.ini b/testing/web-platform/meta/clipboard-apis/text-write-read/async-write-read.https.html.ini
index 0e37e836a0be..60f7e48ffd43 100644
--- a/testing/web-platform/meta/clipboard-apis/text-write-read/async-write-read.https.html.ini
+++ b/testing/web-platform/meta/clipboard-apis/text-write-read/async-write-read.https.html.ini
@@ -1,3 +1,6 @@
+# XXX(krosylight): The test fails on Android without the testing pref, see bug 1888179
+prefs: [dom.events.testing.asyncClipboard:true]
+
 [async-write-read.https.html]
   expected:
     if (os == "android") and not debug: [OK, CRASH]
diff --git a/testing/web-platform/meta/clipboard-apis/text-write-read/async-write-readText.https.html.ini b/testing/web-platform/meta/clipboard-apis/text-write-read/async-write-readText.https.html.ini
index 5e361058ae58..14c01448fa0a 100644
--- a/testing/web-platform/meta/clipboard-apis/text-write-read/async-write-readText.https.html.ini
+++ b/testing/web-platform/meta/clipboard-apis/text-write-read/async-write-readText.https.html.ini
@@ -1,3 +1,6 @@
+# XXX(krosylight): The test fails on Android without the testing pref, see bug 1888179
+prefs: [dom.events.testing.asyncClipboard:true]
+
 [async-write-readText.https.html]
   expected:
     if (os == "android") and debug and fission: [OK, TIMEOUT]
diff --git a/testing/web-platform/meta/clipboard-apis/text-write-read/async-writeText-read.https.html.ini b/testing/web-platform/meta/clipboard-apis/text-write-read/async-writeText-read.https.html.ini
index ddb654688a67..6235629fdf76 100644
--- a/testing/web-platform/meta/clipboard-apis/text-write-read/async-writeText-read.https.html.ini
+++ b/testing/web-platform/meta/clipboard-apis/text-write-read/async-writeText-read.https.html.ini
@@ -1,3 +1,6 @@
+# XXX(krosylight): The test fails on Android without the testing pref, see bug 1888179
+prefs: [dom.events.testing.asyncClipboard:true]
+
 [async-writeText-read.https.html]
   expected:
     if (os == "android") and debug and fission: [OK, TIMEOUT]
diff --git a/testing/web-platform/meta/clipboard-apis/text-write-read/async-writeText-readText.https.html.ini b/testing/web-platform/meta/clipboard-apis/text-write-read/async-writeText-readText.https.html.ini
index efd4b27a626e..2bcc2483570a 100644
--- a/testing/web-platform/meta/clipboard-apis/text-write-read/async-writeText-readText.https.html.ini
+++ b/testing/web-platform/meta/clipboard-apis/text-write-read/async-writeText-readText.https.html.ini
@@ -1,3 +1,6 @@
+# XXX(krosylight): The test fails on Android without the testing pref, see bug 1888179
+prefs: [dom.events.testing.asyncClipboard:true]
+
 [async-writeText-readText.https.html]
   expected:
     if (os == "android") and debug and fission: [OK, TIMEOUT]
diff --git a/testing/web-platform/tests/clipboard-apis/async-custom-formats-write-fail.tentative.https.html b/testing/web-platform/tests/clipboard-apis/async-custom-formats-write-fail.tentative.https.html
index 8b1b42ec78d6..305222a58ff3 100644
--- a/testing/web-platform/tests/clipboard-apis/async-custom-formats-write-fail.tentative.https.html
+++ b/testing/web-platform/tests/clipboard-apis/async-custom-formats-write-fail.tentative.https.html
@@ -12,7 +12,7 @@
 'use strict';
 
 promise_test(async t => {
-  await test_driver.set_permission({name: 'clipboard-write'}, 'granted');
+  await tryGrantWritePermission();
 
   const customFormatArray = [];
   const customFormatMap = {};
@@ -28,7 +28,7 @@ promise_test(async t => {
 }, 'navigator.clipboard.write() fails for more than 100 custom formats');
 
 promise_test(async t => {
-  await test_driver.set_permission({name: 'clipboard-write'}, 'granted');
+  await tryGrantWritePermission();
 
   const format1 = 'application/x-custom-format-clipboard-test-format-1';
   const format2 = 'application/x-custom-format-clipboard-test-format-2';
@@ -42,7 +42,7 @@ promise_test(async t => {
 }, 'navigator.clipboard.write() fails for custom formats without web prefix');
 
 promise_test(async t => {
-  await test_driver.set_permission({name: 'clipboard-write'}, 'granted');
+  await tryGrantWritePermission();
 
   const format1 = 'web ';
   const format2 = 'web a';
@@ -56,7 +56,7 @@ promise_test(async t => {
 }, 'navigator.clipboard.write() fails for custom formats with web prefix, but invalid MIME types');
 
 promise_test(async t => {
-  await test_driver.set_permission({name: 'clipboard-write'}, 'granted');
+  await tryGrantWritePermission();
 
   const format1 = 'web text/plain';
   const format2 = 'text/custom';
@@ -69,7 +69,7 @@ promise_test(async t => {
 }, 'navigator.clipboard.write() fails for custom format with web prefix, but different Blob type');
 
 promise_test(async t => {
-  await test_driver.set_permission({name: 'clipboard-write'}, 'granted');
+  await tryGrantWritePermission();
 
   const format1 = 'web Text/plain';
   const format2 = 'text/plain';
@@ -82,7 +82,7 @@ promise_test(async t => {
 }, 'navigator.clipboard.write() fails for custom format with different case than the Blob type');
 
 promise_test(async t => {
-  await test_driver.set_permission({name: 'clipboard-write'}, 'granted');
+  await tryGrantWritePermission();
 
   const format1 = 'web text/plain';
   const format2 = 'Text/plain';
@@ -95,7 +95,7 @@ promise_test(async t => {
 }, 'navigator.clipboard.write() fails for invalid mime type that is different than the Blob type');
 
 promise_test(async t => {
-  await test_driver.set_permission({name: 'clipboard-write'}, 'granted');
+  await tryGrantWritePermission();
 
   const format1 = 'web Text/plain';
   const format2 = 'web text/plain';
@@ -108,7 +108,7 @@ promise_test(async t => {
 }, 'navigator.clipboard.write() fails for invalid mime type with web prefix and the Blob type');
 
 promise_test(async t => {
-  await test_driver.set_permission({name: 'clipboard-write'}, 'granted');
+  await tryGrantWritePermission();
 
   const format1 = 'Text/plain';
   const format2 = 'text/plain';
diff --git a/testing/web-platform/tests/clipboard-apis/async-custom-formats-write-read-web-prefix.tentative.https.html b/testing/web-platform/tests/clipboard-apis/async-custom-formats-write-read-web-prefix.tentative.https.html
index 9a6e5da6fff1..a5ee7c5bf0ed 100644
--- a/testing/web-platform/tests/clipboard-apis/async-custom-formats-write-read-web-prefix.tentative.https.html
+++ b/testing/web-platform/tests/clipboard-apis/async-custom-formats-write-read-web-prefix.tentative.https.html
@@ -12,8 +12,8 @@
 'use strict';
 
 promise_test(async t => {
-  await test_driver.set_permission({name: 'clipboard-read'}, 'granted');
-  await test_driver.set_permission({name: 'clipboard-write'}, 'granted');
+  await tryGrantReadPermission();
+  await tryGrantWritePermission();
 
   const format1 = 'web text/plain';
   const format2 = 'web text/plain';
diff --git a/testing/web-platform/tests/clipboard-apis/async-custom-formats-write-read-without-web-prefix.tentative.https.html b/testing/web-platform/tests/clipboard-apis/async-custom-formats-write-read-without-web-prefix.tentative.https.html
index 8b9d4de0a1f9..e20b66b55182 100644
--- a/testing/web-platform/tests/clipboard-apis/async-custom-formats-write-read-without-web-prefix.tentative.https.html
+++ b/testing/web-platform/tests/clipboard-apis/async-custom-formats-write-read-without-web-prefix.tentative.https.html
@@ -12,8 +12,8 @@
 'use strict';
 
 promise_test(async t => {
-  await test_driver.set_permission({name: 'clipboard-read'}, 'granted');
-  await test_driver.set_permission({name: 'clipboard-write'}, 'granted');
+  await tryGrantReadPermission();
+  await tryGrantWritePermission();
 
   const format1 = 'web text/plain';
   const format2 = 'text/plain';
diff --git a/testing/web-platform/tests/clipboard-apis/async-custom-formats-write-read.tentative.https.html b/testing/web-platform/tests/clipboard-apis/async-custom-formats-write-read.tentative.https.html
index a005f8c98f02..d174df67498d 100644
--- a/testing/web-platform/tests/clipboard-apis/async-custom-formats-write-read.tentative.https.html
+++ b/testing/web-platform/tests/clipboard-apis/async-custom-formats-write-read.tentative.https.html
@@ -12,8 +12,8 @@
 'use strict';
 
 promise_test(async t => {
-  await test_driver.set_permission({name: 'clipboard-read'}, 'granted');
-  await test_driver.set_permission({name: 'clipboard-write'}, 'granted');
+  await tryGrantReadPermission();
+  await tryGrantWritePermission();
   const format1 = 'web application/x-custom-format-clipboard-test-format-1';
   const format2 = 'web application/x-custom-format-clipboard-test-format-2';
   const blobInput1 = new Blob(['input data 1'], {type: format1});
diff --git a/testing/web-platform/tests/clipboard-apis/async-html-script-removal.https.html b/testing/web-platform/tests/clipboard-apis/async-html-script-removal.https.html
index 44c11add8551..9ec9a3735642 100644
--- a/testing/web-platform/tests/clipboard-apis/async-html-script-removal.https.html
+++ b/testing/web-platform/tests/clipboard-apis/async-html-script-removal.https.html
@@ -34,8 +34,8 @@ const html_with_script =
 const html_without_script =
   '<title>Title of the document</title> <p>Hello World</p>';
 promise_test(async t => {
-  await test_driver.set_permission({name: 'clipboard-read'}, 'granted');
-  await test_driver.set_permission({name: 'clipboard-write'}, 'granted');
+  await tryGrantReadPermission();
+  await tryGrantWritePermission();
   const blobInput = new Blob([html_with_script], {type: 'text/html'});
   const clipboardItem = new ClipboardItem({'text/html': blobInput});
   await waitForUserActivation();
diff --git a/testing/web-platform/tests/clipboard-apis/async-navigator-clipboard-basics.https.html b/testing/web-platform/tests/clipboard-apis/async-navigator-clipboard-basics.https.html
index 4a11d5ac66d8..5d6f701bdb75 100644
--- a/testing/web-platform/tests/clipboard-apis/async-navigator-clipboard-basics.https.html
+++ b/testing/web-platform/tests/clipboard-apis/async-navigator-clipboard-basics.https.html
@@ -13,8 +13,8 @@
 // Permissions are required in order to invoke navigator.clipboard functions in
 // an automated test.
 async function getPermissions() {
-  await test_driver.set_permission({name: 'clipboard-read'}, 'granted');
-  await test_driver.set_permission({name: 'clipboard-write'}, 'granted');
+  await tryGrantReadPermission();
+  await tryGrantWritePermission();
   await waitForUserActivation();
 }
 
diff --git a/testing/web-platform/tests/clipboard-apis/async-navigator-clipboard-read-resource-load.https.html b/testing/web-platform/tests/clipboard-apis/async-navigator-clipboard-read-resource-load.https.html
index d1e3019e7f93..25a90a2d0822 100644
--- a/testing/web-platform/tests/clipboard-apis/async-navigator-clipboard-read-resource-load.https.html
+++ b/testing/web-platform/tests/clipboard-apis/async-navigator-clipboard-read-resource-load.https.html
@@ -26,7 +26,7 @@ promise_test(async test => {
   let loadObserved = false;
   const observer = new PerformanceObserver(() => loadObserved = true);
   observer.observe({type: 'resource'});
-  await test_driver.set_permission({name: 'clipboard-read'}, 'granted');
+  await tryGrantReadPermission();
   await test_driver.click(button);
 
   await waitForUserActivation();
diff --git a/testing/web-platform/tests/clipboard-apis/async-navigator-clipboard-read-sanitize.https.html b/testing/web-platform/tests/clipboard-apis/async-navigator-clipboard-read-sanitize.https.html
index cc1836753478..4f8463cd7cc7 100644
--- a/testing/web-platform/tests/clipboard-apis/async-navigator-clipboard-read-sanitize.https.html
+++ b/testing/web-platform/tests/clipboard-apis/async-navigator-clipboard-read-sanitize.https.html
@@ -28,7 +28,7 @@ document.oncopy = ev => {
 };
 
 promise_test(async test => {
-  await test_driver.set_permission({name: 'clipboard-read'}, 'granted');
+  await tryGrantReadPermission();
   await test_driver.click(button);
 
   await waitForUserActivation();
diff --git a/testing/web-platform/tests/clipboard-apis/async-navigator-clipboard-write-multiple.tentative.https.sub.html b/testing/web-platform/tests/clipboard-apis/async-navigator-clipboard-write-multiple.tentative.https.sub.html
index 73cdd2f049e3..c310203503f3 100644
--- a/testing/web-platform/tests/clipboard-apis/async-navigator-clipboard-write-multiple.tentative.https.sub.html
+++ b/testing/web-platform/tests/clipboard-apis/async-navigator-clipboard-write-multiple.tentative.https.sub.html
@@ -18,8 +18,8 @@
 // Permissions are required in order to invoke navigator.clipboard functions in
 // an automated test.
 async function getPermissions() {
-  await test_driver.set_permission({name: "clipboard-read"}, "granted");
-  await test_driver.set_permission({name: "clipboard-write"}, "granted");
+  await tryGrantReadPermission();
+  await tryGrantWritePermission()
   await waitForUserActivation();
 }
 
diff --git a/testing/web-platform/tests/clipboard-apis/async-promise-write-blobs-read-blobs.https.html b/testing/web-platform/tests/clipboard-apis/async-promise-write-blobs-read-blobs.https.html
index 12184c92e077..6b7989316002 100644
--- a/testing/web-platform/tests/clipboard-apis/async-promise-write-blobs-read-blobs.https.html
+++ b/testing/web-platform/tests/clipboard-apis/async-promise-write-blobs-read-blobs.https.html
@@ -21,8 +21,8 @@ promise_test(async t => {
   const promise1 = new Promise((resolve, reject) => {
     resolve(loadBlob('resources/greenbox.png'));
   });
-  await test_driver.set_permission({name: 'clipboard-read'}, 'granted');
-  await test_driver.set_permission({name: 'clipboard-write'}, 'granted');
+  await tryGrantReadPermission();
+  await tryGrantWritePermission();
 
   const blobText = new Blob(['test text'], {type: 'text/plain'});
 
diff --git a/testing/web-platform/tests/clipboard-apis/async-unsanitized-html-formats-write-read.tentative.https.html b/testing/web-platform/tests/clipboard-apis/async-unsanitized-html-formats-write-read.tentative.https.html
index 46e335c804b7..848900830f13 100644
--- a/testing/web-platform/tests/clipboard-apis/async-unsanitized-html-formats-write-read.tentative.https.html
+++ b/testing/web-platform/tests/clipboard-apis/async-unsanitized-html-formats-write-read.tentative.https.html
@@ -27,8 +27,8 @@ function reformatHtml(html) {
 // Writes a payload with custom content and checks to ensure the correct data
 // was written successfully.
 promise_test(async t => {
-  await test_driver.set_permission({name: 'clipboard-read'}, 'granted');
-  await test_driver.set_permission({name: 'clipboard-write'}, 'granted');
+  await tryGrantReadPermission();
+  await tryGrantWritePermission();
 
   // Create and write unsanitized version of standard HTML and custom formats.
   const format1 = 'text/html';
diff --git a/testing/web-platform/tests/clipboard-apis/async-unsanitized-plaintext-formats-write-read.tentative.https.html b/testing/web-platform/tests/clipboard-apis/async-unsanitized-plaintext-formats-write-read.tentative.https.html
index 1c5638ca0a5f..dea91b41d7eb 100644
--- a/testing/web-platform/tests/clipboard-apis/async-unsanitized-plaintext-formats-write-read.tentative.https.html
+++ b/testing/web-platform/tests/clipboard-apis/async-unsanitized-plaintext-formats-write-read.tentative.https.html
@@ -14,8 +14,8 @@
 // Writes a payload with custom content and checks to ensure the correct data
 // was written successfully.
 promise_test(async t => {
-  await test_driver.set_permission({name: 'clipboard-read'}, 'granted');
-  await test_driver.set_permission({name: 'clipboard-write'}, 'granted');
+  await tryGrantReadPermission();
+  await tryGrantWritePermission();
 
   const dataToWrite = 'Test text.';
   const format1 = 'web text/plain';
diff --git a/testing/web-platform/tests/clipboard-apis/async-unsanitized-standard-html-read-fail.tentative.https.html b/testing/web-platform/tests/clipboard-apis/async-unsanitized-standard-html-read-fail.tentative.https.html
index e7ddbb0cdf6e..f0884d6c20cb 100644
--- a/testing/web-platform/tests/clipboard-apis/async-unsanitized-standard-html-read-fail.tentative.https.html
+++ b/testing/web-platform/tests/clipboard-apis/async-unsanitized-standard-html-read-fail.tentative.https.html
@@ -12,7 +12,7 @@
 'use strict';
 
 promise_test(async t => {
-  await test_driver.set_permission({name: 'clipboard-read'}, 'granted');
+  await tryGrantReadPermission();
 
   await waitForUserActivation();
   await promise_rejects_dom(t, 'NotAllowedError',
@@ -20,7 +20,7 @@ promise_test(async t => {
 }, 'navigator.clipboard.read() fails for multiple unsanitized formats requested.');
 
 promise_test(async t => {
-  await test_driver.set_permission({name: 'clipboard-read'}, 'granted');
+  await tryGrantReadPermission();
 
   await waitForUserActivation();
   await promise_rejects_dom(t, 'NotAllowedError',
@@ -28,7 +28,7 @@ promise_test(async t => {
 }, 'navigator.clipboard.read() fails for unsanitized text/plain requested.');
 
 promise_test(async t => {
-  await test_driver.set_permission({name: 'clipboard-read'}, 'granted');
+  await tryGrantReadPermission();
 
   await waitForUserActivation();
   await promise_rejects_dom(t, 'NotAllowedError',
@@ -36,11 +36,11 @@ promise_test(async t => {
 }, 'navigator.clipboard.read() fails for unsanitized image/png requested.');
 
 promise_test(async t => {
-  await test_driver.set_permission({name: 'clipboard-read'}, 'granted');
+  await tryGrantReadPermission();
 
   await waitForUserActivation();
   await promise_rejects_dom(t, 'NotAllowedError',
       navigator.clipboard.read({unsanitized: ['image/svg+xml']}));
 }, 'navigator.clipboard.read() fails for unsanitized image/svg+xml requested.');
 
-</script>
\ No newline at end of file
+</script>
diff --git a/testing/web-platform/tests/clipboard-apis/async-write-blobs-read-blobs.https.html b/testing/web-platform/tests/clipboard-apis/async-write-blobs-read-blobs.https.html
index 8bec558b2b2d..d89640d58a03 100644
--- a/testing/web-platform/tests/clipboard-apis/async-write-blobs-read-blobs.https.html
+++ b/testing/web-platform/tests/clipboard-apis/async-write-blobs-read-blobs.https.html
@@ -18,8 +18,8 @@ async function loadBlob(fileName) {
 }
 
 promise_test(async t => {
-  await test_driver.set_permission({name: 'clipboard-read'}, 'granted');
-  await test_driver.set_permission({name: 'clipboard-write'}, 'granted');
+  await tryGrantReadPermission();
+  await tryGrantWritePermission();
 
   const blobText = new Blob(['test text'], {type: 'text/plain'});
   const blobImage = await loadBlob('resources/greenbox.png');
diff --git a/testing/web-platform/tests/clipboard-apis/async-write-html-read-html.https.html b/testing/web-platform/tests/clipboard-apis/async-write-html-read-html.https.html
index ec1817c027bb..2573916bd6af 100644
--- a/testing/web-platform/tests/clipboard-apis/async-write-html-read-html.https.html
+++ b/testing/web-platform/tests/clipboard-apis/async-write-html-read-html.https.html
@@ -26,8 +26,8 @@ function reformatHtml(html) {
 }
 
 async function readWriteTest(textInput) {
-  await test_driver.set_permission({name: 'clipboard-read'}, 'granted');
-  await test_driver.set_permission({name: 'clipboard-write'}, 'granted');
+  await tryGrantReadPermission();
+  await tryGrantWritePermission();
   const blobInput = new Blob([textInput], {type: 'text/html'});
   const clipboardItem = new ClipboardItem({'text/html': blobInput});
   await waitForUserActivation();
diff --git a/testing/web-platform/tests/clipboard-apis/async-write-image-read-image.https.html b/testing/web-platform/tests/clipboard-apis/async-write-image-read-image.https.html
index e10b69d824c2..a8aa7d457cba 100644
--- a/testing/web-platform/tests/clipboard-apis/async-write-image-read-image.https.html
+++ b/testing/web-platform/tests/clipboard-apis/async-write-image-read-image.https.html
@@ -42,8 +42,8 @@ async function loadBlob(fileName) {
 }
 
 promise_test(async t => {
-  await test_driver.set_permission({name: 'clipboard-read'}, 'granted');
-  await test_driver.set_permission({name: 'clipboard-write'}, 'granted');
+  await tryGrantReadPermission();
+  await tryGrantWritePermission();
 
   const blobInput = await loadBlob('resources/greenbox.png');
 
@@ -71,8 +71,8 @@ promise_test(async t => {
 }, 'Verify write and read clipboard [image/png Blob]');
 
 promise_test(async t => {
-  await test_driver.set_permission({name: 'clipboard-read'}, 'granted');
-  await test_driver.set_permission({name: 'clipboard-write'}, 'granted');
+  await tryGrantReadPermission();
+  await tryGrantWritePermission();
 
   const invalidPngBlob = new Blob(['this text is not a valid png image'],
       {type: 'image/png'});
diff --git a/testing/web-platform/tests/clipboard-apis/detached-iframe/read-on-detaching-iframe.https.html b/testing/web-platform/tests/clipboard-apis/detached-iframe/read-on-detaching-iframe.https.html
index 8e8e015aa051..827c17a9e32f 100644
--- a/testing/web-platform/tests/clipboard-apis/detached-iframe/read-on-detaching-iframe.https.html
+++ b/testing/web-platform/tests/clipboard-apis/detached-iframe/read-on-detaching-iframe.https.html
@@ -6,6 +6,7 @@
 <script src="/resources/testharnessreport.js"></script>
 <script src="/resources/testdriver.js"></script>
 <script src="/resources/testdriver-vendor.js"></script>
+<script src="../resources/user-activation.js"></script>
 <iframe id="iframe"></iframe>
 <script>
 'use strict';
@@ -14,8 +15,8 @@ promise_test(async t => {
   // This tests proper behavior on a detaching iframe. text/plain is chosen for
   // simplicity, and the test should fail the same way no matter what the input
   // type is.
-  await test_driver.set_permission({name: 'clipboard-read'}, 'granted');
-  await test_driver.set_permission({name: 'clipboard-write'}, 'granted');
+  await tryGrantReadPermission();
+  await tryGrantWritePermission();
 
   const iframe = document.getElementById('iframe');
   const iframeClipboard = iframe.contentWindow.navigator.clipboard;
diff --git a/testing/web-platform/tests/clipboard-apis/detached-iframe/write-on-detaching-iframe.https.html b/testing/web-platform/tests/clipboard-apis/detached-iframe/write-on-detaching-iframe.https.html
index c6913d9e9f64..b3836799df82 100644
--- a/testing/web-platform/tests/clipboard-apis/detached-iframe/write-on-detaching-iframe.https.html
+++ b/testing/web-platform/tests/clipboard-apis/detached-iframe/write-on-detaching-iframe.https.html
@@ -6,6 +6,7 @@
 <script src="/resources/testharnessreport.js"></script>
 <script src="/resources/testdriver.js"></script>
 <script src="/resources/testdriver-vendor.js"></script>
+<script src="../resources/user-activation.js"></script>
 <iframe id="iframe"></iframe>
 <script>
 'use strict';
@@ -14,8 +15,8 @@ promise_test(async t => {
   // This tests proper behavior on a detaching iframe. text/plain is chosen for
   // simplicity, and the test should fail the same way no matter what the input
   // type is.
-  await test_driver.set_permission({name: 'clipboard-read'}, 'granted');
-  await test_driver.set_permission({name: 'clipboard-write'}, 'granted');
+  await tryGrantReadPermission();
+  await tryGrantWritePermission();
 
   const iframe = document.getElementById('iframe');
   const iframeClipboard = iframe.contentWindow.navigator.clipboard;
diff --git a/testing/web-platform/tests/clipboard-apis/detached-iframe/write-read-on-detached-iframe.https.html b/testing/web-platform/tests/clipboard-apis/detached-iframe/write-read-on-detached-iframe.https.html
index b21e6b20bc0d..155f9d004aee 100644
--- a/testing/web-platform/tests/clipboard-apis/detached-iframe/write-read-on-detached-iframe.https.html
+++ b/testing/web-platform/tests/clipboard-apis/detached-iframe/write-read-on-detached-iframe.https.html
@@ -15,8 +15,8 @@ promise_test(async t => {
   // This tests proper behavior on a detaching iframe. text/plain is chosen for
   // simplicity, and the test should fail the same way no matter what the input
   // type is.
-  await test_driver.set_permission({name: 'clipboard-read'}, 'granted');
-  await test_driver.set_permission({name: 'clipboard-write'}, 'granted');
+  await tryGrantReadPermission();
+  await tryGrantWritePermission();
 
   const iframe = document.getElementById('iframe');
   const iframeClipboard = iframe.contentWindow.navigator.clipboard;
diff --git a/testing/web-platform/tests/clipboard-apis/detached-iframe/writeText-readText-on-detached-iframe.https.html b/testing/web-platform/tests/clipboard-apis/detached-iframe/writeText-readText-on-detached-iframe.https.html
index 24fa586fc770..8c6448d5cc9e 100644
--- a/testing/web-platform/tests/clipboard-apis/detached-iframe/writeText-readText-on-detached-iframe.https.html
+++ b/testing/web-platform/tests/clipboard-apis/detached-iframe/writeText-readText-on-detached-iframe.https.html
@@ -12,8 +12,8 @@
 'use strict';
 
 promise_test(async t => {
-  await test_driver.set_permission({name: 'clipboard-read'}, 'granted');
-  await test_driver.set_permission({name: 'clipboard-write'}, 'granted');
+  await tryGrantReadPermission();
+  await tryGrantWritePermission();
 
   const iframe = document.getElementById('iframe');
   await waitForUserActivation();
diff --git a/testing/web-platform/tests/clipboard-apis/feature-policy/clipboard-read/clipboard-read-disabled-by-feature-policy.tentative.https.sub.html b/testing/web-platform/tests/clipboard-apis/feature-policy/clipboard-read/clipboard-read-disabled-by-feature-policy.tentative.https.sub.html
index 7af2b8944e8b..a13493f7947d 100644
--- a/testing/web-platform/tests/clipboard-apis/feature-policy/clipboard-read/clipboard-read-disabled-by-feature-policy.tentative.https.sub.html
+++ b/testing/web-platform/tests/clipboard-apis/feature-policy/clipboard-read/clipboard-read-disabled-by-feature-policy.tentative.https.sub.html
@@ -14,7 +14,7 @@ const cross_origin_src =
   'https://{{domains[www]}}:{{ports[https][0]}}' + same_origin_src;
 
 promise_test(async t => {
-  await test_driver.set_permission({ name: 'clipboard-read' }, 'granted');
+  await tryGrantReadPermission();
   return promise_rejects_dom(t, 'NotAllowedError',
       navigator.clipboard.readText('test text'));
 }, 'Feature-Policy header clipboard-read "none" disallows the top-level document.');
diff --git a/testing/web-platform/tests/clipboard-apis/feature-policy/clipboard-read/clipboard-read-enabled-by-feature-policy.tentative.https.sub.html b/testing/web-platform/tests/clipboard-apis/feature-policy/clipboard-read/clipboard-read-enabled-by-feature-policy.tentative.https.sub.html
index 552183cc67d4..c21d6cf0f621 100644
--- a/testing/web-platform/tests/clipboard-apis/feature-policy/clipboard-read/clipboard-read-enabled-by-feature-policy.tentative.https.sub.html
+++ b/testing/web-platform/tests/clipboard-apis/feature-policy/clipboard-read/clipboard-read-enabled-by-feature-policy.tentative.https.sub.html
@@ -15,7 +15,7 @@ const cross_origin_src =
   'https://{{domains[www]}}:{{ports[https][0]}}' + same_origin_src;
 
 promise_test(async t => {
-  await test_driver.set_permission({ name: 'clipboard-read' }, 'granted');
+  await tryGrantReadPermission();
   await waitForUserActivation();
   await navigator.clipboard.readText('test text');
 }, 'Feature-Policy header clipboard-read "*" allows the top-level document.');
diff --git a/testing/web-platform/tests/clipboard-apis/feature-policy/clipboard-read/clipboard-read-enabled-on-self-origin-by-feature-policy.tentative.https.sub.html b/testing/web-platform/tests/clipboard-apis/feature-policy/clipboard-read/clipboard-read-enabled-on-self-origin-by-feature-policy.tentative.https.sub.html
index 17dc3628a772..79dd6cf891cf 100644
--- a/testing/web-platform/tests/clipboard-apis/feature-policy/clipboard-read/clipboard-read-enabled-on-self-origin-by-feature-policy.tentative.https.sub.html
+++ b/testing/web-platform/tests/clipboard-apis/feature-policy/clipboard-read/clipboard-read-enabled-on-self-origin-by-feature-policy.tentative.https.sub.html
@@ -15,7 +15,7 @@ const cross_origin_src =
   'https://{{domains[www]}}:{{ports[https][0]}}' + same_origin_src;
 
 promise_test(async t => {
-  await test_driver.set_permission({ name: 'clipboard-read' }, 'granted');
+  await tryGrantReadPermission();
   await waitForUserActivation();
   await navigator.clipboard.readText('test text');
 }, 'Feature-Policy header clipboard-read "self" allows the top-level document.');
diff --git a/testing/web-platform/tests/clipboard-apis/feature-policy/clipboard-write/clipboard-write-disabled-by-feature-policy.tentative.https.sub.html b/testing/web-platform/tests/clipboard-apis/feature-policy/clipboard-write/clipboard-write-disabled-by-feature-policy.tentative.https.sub.html
index 5d19d8dd6f26..fb076feac8b4 100644
--- a/testing/web-platform/tests/clipboard-apis/feature-policy/clipboard-write/clipboard-write-disabled-by-feature-policy.tentative.https.sub.html
+++ b/testing/web-platform/tests/clipboard-apis/feature-policy/clipboard-write/clipboard-write-disabled-by-feature-policy.tentative.https.sub.html
@@ -14,7 +14,7 @@ const cross_origin_src =
   'https://{{domains[www]}}:{{ports[https][0]}}' + same_origin_src;
 
 promise_test(async t => {
-  await test_driver.set_permission({ name: 'clipboard-write' }, 'granted');
+  await tryGrantWritePermission();
   return promise_rejects_dom(t, 'NotAllowedError',
       navigator.clipboard.writeText('test text'));
 }, 'Feature-Policy header clipboard-write "none" disallows the top-level document.');
diff --git a/testing/web-platform/tests/clipboard-apis/feature-policy/clipboard-write/clipboard-write-enabled-by-feature-policy.tentative.https.sub.html b/testing/web-platform/tests/clipboard-apis/feature-policy/clipboard-write/clipboard-write-enabled-by-feature-policy.tentative.https.sub.html
index ca97994c617d..cb908df65f28 100644
--- a/testing/web-platform/tests/clipboard-apis/feature-policy/clipboard-write/clipboard-write-enabled-by-feature-policy.tentative.https.sub.html
+++ b/testing/web-platform/tests/clipboard-apis/feature-policy/clipboard-write/clipboard-write-enabled-by-feature-policy.tentative.https.sub.html
@@ -15,7 +15,7 @@ const cross_origin_src =
   'https://{{domains[www]}}:{{ports[https][0]}}' + same_origin_src;
 
 promise_test(async t => {
-  await test_driver.set_permission({ name: 'clipboard-write' }, 'granted');
+  await tryGrantWritePermission();
   await waitForUserActivation();
   await navigator.clipboard.writeText('test text');
 }, 'Feature-Policy header clipboard-write "*" allows the top-level document.');
diff --git a/testing/web-platform/tests/clipboard-apis/feature-policy/clipboard-write/clipboard-write-enabled-on-self-origin-by-feature-policy.tentative.https.sub.html b/testing/web-platform/tests/clipboard-apis/feature-policy/clipboard-write/clipboard-write-enabled-on-self-origin-by-feature-policy.tentative.https.sub.html
index 5615a68ac55a..532c72545c75 100644
--- a/testing/web-platform/tests/clipboard-apis/feature-policy/clipboard-write/clipboard-write-enabled-on-self-origin-by-feature-policy.tentative.https.sub.html
+++ b/testing/web-platform/tests/clipboard-apis/feature-policy/clipboard-write/clipboard-write-enabled-on-self-origin-by-feature-policy.tentative.https.sub.html
@@ -15,7 +15,7 @@ const cross_origin_src =
   'https://{{domains[www]}}:{{ports[https][0]}}' + same_origin_src;
 
 promise_test(async t => {
-  await test_driver.set_permission({ name: 'clipboard-write' }, 'granted');
+  await tryGrantWritePermission();
   await waitForUserActivation();
   await navigator.clipboard.writeText('test text');
 }, 'Feature-Policy header clipboard-write "self" allows the top-level document.');
diff --git a/testing/web-platform/tests/clipboard-apis/permissions/readText-denied.https.html b/testing/web-platform/tests/clipboard-apis/permissions/readText-denied.https.html
index 010f4ba21b95..379b0ff18b8b 100644
--- a/testing/web-platform/tests/clipboard-apis/permissions/readText-denied.https.html
+++ b/testing/web-platform/tests/clipboard-apis/permissions/readText-denied.https.html
@@ -12,7 +12,7 @@
 'use strict';
 
 promise_test(async t => {
-  await test_driver.set_permission({name: 'clipboard-read'}, 'denied');
+  await trySetPermission('clipboard-read', 'denied');
   await waitForUserActivation();
   await promise_rejects_dom(t,
       'NotAllowedError', navigator.clipboard.readText());
diff --git a/testing/web-platform/tests/clipboard-apis/permissions/readText-granted.https.html b/testing/web-platform/tests/clipboard-apis/permissions/readText-granted.https.html
index e912bd64a831..0b2d7034df34 100644
--- a/testing/web-platform/tests/clipboard-apis/permissions/readText-granted.https.html
+++ b/testing/web-platform/tests/clipboard-apis/permissions/readText-granted.https.html
@@ -12,8 +12,8 @@
 'use strict';
 
 promise_test(async () => {
-  await test_driver.set_permission({name: 'clipboard-read'}, 'granted');
+  await tryGrantReadPermission();
   await waitForUserActivation();
   await navigator.clipboard.readText();
 }, 'navigator.clipboard.readText() succeeds when permission granted');
-</script>
\ No newline at end of file
+</script>
diff --git a/testing/web-platform/tests/clipboard-apis/permissions/writeText-denied.https.html b/testing/web-platform/tests/clipboard-apis/permissions/writeText-denied.https.html
index 5fbcab411748..3d6b4397a042 100644
--- a/testing/web-platform/tests/clipboard-apis/permissions/writeText-denied.https.html
+++ b/testing/web-platform/tests/clipboard-apis/permissions/writeText-denied.https.html
@@ -12,7 +12,7 @@
 'use strict';
 
 promise_test(async t => {
-  await test_driver.set_permission({name: 'clipboard-write'}, 'denied');
+  await trySetPermission('clipboard-write', 'denied');
   await waitForUserActivation();
   await promise_rejects_dom(t, 'NotAllowedError',
       navigator.clipboard.writeText('xyz'));
diff --git a/testing/web-platform/tests/clipboard-apis/permissions/writeText-granted.https.html b/testing/web-platform/tests/clipboard-apis/permissions/writeText-granted.https.html
index ff347b7adda0..c0307811dcc4 100644
--- a/testing/web-platform/tests/clipboard-apis/permissions/writeText-granted.https.html
+++ b/testing/web-platform/tests/clipboard-apis/permissions/writeText-granted.https.html
@@ -12,8 +12,8 @@
 'use strict';
 
 promise_test(async () => {
-  await test_driver.set_permission({name: 'clipboard-write'}, 'granted');
+  await tryGrantWritePermission();
   await waitForUserActivation();
   await navigator.clipboard.writeText('xyz');
 }, 'navigator.clipboard.writeText() succeeds when permission granted');
-</script>
\ No newline at end of file
+</script>
diff --git a/testing/web-platform/tests/clipboard-apis/resources/page.html b/testing/web-platform/tests/clipboard-apis/resources/page.html
index 35bde8e5016b..fc8bd895d100 100644
--- a/testing/web-platform/tests/clipboard-apis/resources/page.html
+++ b/testing/web-platform/tests/clipboard-apis/resources/page.html
@@ -9,8 +9,8 @@
 window.addEventListener("message", async (e) => {
   if (e.data && e.data[0] == "write") {
     test_driver.set_test_context(window.parent);
-    await test_driver.set_permission({name: 'clipboard-read'}, 'granted');
-    await test_driver.set_permission({name: 'clipboard-write'}, 'granted');
+    await tryGrantReadPermission();
+    await tryGrantWritePermission();
     await waitForUserActivation();
     await navigator.clipboard.write([
       new ClipboardItem({
diff --git a/testing/web-platform/tests/clipboard-apis/resources/user-activation.js b/testing/web-platform/tests/clipboard-apis/resources/user-activation.js
index ed294bb9cb27..6fa5bcba4054 100644
--- a/testing/web-platform/tests/clipboard-apis/resources/user-activation.js
+++ b/testing/web-platform/tests/clipboard-apis/resources/user-activation.js
@@ -23,3 +23,22 @@ async function waitForUserActivation() {
   test_driver.click(document.body);
   await clickedPromise;
 }
+
+async function trySetPermission(perm, state) {
+  try {
+    await test_driver.set_permission({ name: perm }, state)
+  } catch {
+    // This is expected, as clipboard permissions are not supported by every engine
+    // and also the set_permission. The permission is not required by such engines as
+    // they require user activation instead.
+  }
+}
+
+async function tryGrantReadPermission(state) {
+  await trySetPermission("clipboard-read", "granted");
+}
+
+async function tryGrantWritePermission() {
+  await trySetPermission("clipboard-write", "granted");
+}
+
diff --git a/testing/web-platform/tests/clipboard-apis/text-write-read/async-write-read.https.html b/testing/web-platform/tests/clipboard-apis/text-write-read/async-write-read.https.html
index c46e5d431713..516783edaedf 100644
--- a/testing/web-platform/tests/clipboard-apis/text-write-read/async-write-read.https.html
+++ b/testing/web-platform/tests/clipboard-apis/text-write-read/async-write-read.https.html
@@ -14,8 +14,8 @@
 <script>
 async function readWriteTest(textInput) {
   promise_test(async t => {
-    await test_driver.set_permission({name: 'clipboard-read'}, 'granted');
-    await test_driver.set_permission({name: 'clipboard-write'}, 'granted');
+    await tryGrantReadPermission();
+    await tryGrantWritePermission();
 
     const blobInput = new Blob([textInput], {type: 'text/plain'});
     const clipboardItemInput = new ClipboardItem({'text/plain': blobInput});
diff --git a/testing/web-platform/tests/clipboard-apis/text-write-read/async-write-readText.https.html b/testing/web-platform/tests/clipboard-apis/text-write-read/async-write-readText.https.html
index 66969b1777b2..ab7b619ac99e 100644
--- a/testing/web-platform/tests/clipboard-apis/text-write-read/async-write-readText.https.html
+++ b/testing/web-platform/tests/clipboard-apis/text-write-read/async-write-readText.https.html
@@ -13,8 +13,8 @@
 <script>
 async function readWriteTest(textInput) {
   promise_test(async t => {
-    await test_driver.set_permission({name: 'clipboard-read'}, 'granted');
-    await test_driver.set_permission({name: 'clipboard-write'}, 'granted');
+    await tryGrantReadPermission();
+    await tryGrantWritePermission();
 
     const blobInput = new Blob([textInput], {type: 'text/plain'});
     const clipboardItem = new ClipboardItem({'text/plain': blobInput});
diff --git a/testing/web-platform/tests/clipboard-apis/text-write-read/async-writeText-read.https.html b/testing/web-platform/tests/clipboard-apis/text-write-read/async-writeText-read.https.html
index ddf563269a42..40f26d4786a6 100644
--- a/testing/web-platform/tests/clipboard-apis/text-write-read/async-writeText-read.https.html
+++ b/testing/web-platform/tests/clipboard-apis/text-write-read/async-writeText-read.https.html
@@ -13,8 +13,8 @@
 <script>
 async function readWriteTest(textInput) {
   promise_test(async t => {
-    await test_driver.set_permission({name: 'clipboard-read'}, 'granted');
-    await test_driver.set_permission({name: 'clipboard-write'}, 'granted');
+    await tryGrantReadPermission();
+    await tryGrantWritePermission();
 
     await waitForUserActivation();
     await navigator.clipboard.writeText(textInput);
diff --git a/testing/web-platform/tests/clipboard-apis/text-write-read/async-writeText-readText.https.html b/testing/web-platform/tests/clipboard-apis/text-write-read/async-writeText-readText.https.html
index 0defdf7a7095..647a00e050b5 100644
--- a/testing/web-platform/tests/clipboard-apis/text-write-read/async-writeText-readText.https.html
+++ b/testing/web-platform/tests/clipboard-apis/text-write-read/async-writeText-readText.https.html
@@ -11,8 +11,8 @@
 <script>
 async function readWriteTest(textInput) {
   promise_test(async t => {
-    await test_driver.set_permission({name: 'clipboard-read'}, 'granted');
-    await test_driver.set_permission({name: 'clipboard-write'}, 'granted');
+    await tryGrantReadPermission();
+    await tryGrantWritePermission();
 
     await waitForUserActivation();
     await navigator.clipboard.writeText(textInput);