diff --git a/tests/wpt/metadata/FileAPI/url/url-in-tags-revoke.window.js.ini b/tests/wpt/metadata/FileAPI/url/url-in-tags-revoke.window.js.ini
index a9e46713244..76b398963ae 100644
--- a/tests/wpt/metadata/FileAPI/url/url-in-tags-revoke.window.js.ini
+++ b/tests/wpt/metadata/FileAPI/url/url-in-tags-revoke.window.js.ini
@@ -7,7 +7,7 @@
     expected: FAIL
 
   [Opening a blob URL in a new window immediately before revoking it works.]
-    expected: TIMEOUT
+    expected: FAIL
 
   [Opening a blob URL in a noopener about:blank window immediately before revoking it works.]
     expected: FAIL
diff --git a/tests/wpt/metadata/MANIFEST.json b/tests/wpt/metadata/MANIFEST.json
index ace6e811425..2d83d384e56 100644
--- a/tests/wpt/metadata/MANIFEST.json
+++ b/tests/wpt/metadata/MANIFEST.json
@@ -633571,7 +633571,7 @@
    "support"
   ],
   "docs/assets/createpr.png": [
-   "7b232a86d0f6257c451828abbb4ac41b48d2ba85",
+   "4403a95c146c1aaba697a5198852548d948a5461",
    "support"
   ],
   "docs/assets/files-changed.png": [
@@ -633599,11 +633599,11 @@
    "support"
   ],
   "docs/assets/pullrequestbtn.png": [
-   "0fb15da15387ed4bf32a14e01536c7d2b4f81030",
+   "07d9c6a2e94122c94ae4d3802e09d9bbaea3296d",
    "support"
   ],
   "docs/assets/reftest-tutorial-test-screenshot.png": [
-   "611fffbd220b8a8ab56216786dd3f85e2934906b",
+   "8d882822e1274124249be51cc2af26be0c23f340",
    "support"
   ],
   "docs/assets/reftest_graph_example.svg": [
@@ -633611,15 +633611,15 @@
    "support"
   ],
   "docs/assets/testharness-tutorial-test-screenshot-1.png": [
-   "5195ba25ae647acdc1dc9cd3877d1204abab95df",
+   "c469e94a553c2f780dfd297bf127990674b142cc",
    "support"
   ],
   "docs/assets/testharness-tutorial-test-screenshot-2.png": [
-   "0010a57173121330bae8df3c3f851db10cffcb67",
+   "612eda54487bd8e8808e8c8a3e87d0f221e55d00",
    "support"
   ],
   "docs/assets/web-platform.png": [
-   "2b14c5ef60dd064b8751151f5b778019fe2431bf",
+   "8547f491835ea2b11c69ff66f834ebc747af7fab",
    "support"
   ],
   "docs/conf.py": [
@@ -635095,7 +635095,7 @@
    "testharness"
   ],
   "dom/nodes/aria-element-reflection.tentative.html": [
-   "7c8e690a28bbcaa1391878300f143aa1e584fe5e",
+   "1ee896ea1be0cae1613a880fbdea547f1894839f",
    "testharness"
   ],
   "dom/nodes/attributes.html": [
@@ -693427,7 +693427,7 @@
    "support"
   ],
   "resources/chromium/nfc-mock.js": [
-   "ce22a9c2cfe9c0ae460d6e1eff4aaa99fe6b24e3",
+   "f5666c18f5c57fdc8ee74c1572824f34e346d5ed",
    "support"
   ],
   "resources/chromium/sensor.mojom.js": [
@@ -716191,7 +716191,7 @@
    "testharness"
   ],
   "web-nfc/NDEFMessage_constructor.https.html": [
-   "ce212136023058dd6597ff925fd68a73e5d2ab95",
+   "f32f179b95798fe590a518603eff35265cd51494",
    "testharness"
   ],
   "web-nfc/NDEFReader-document-hidden-manual.https.html": [
@@ -716199,11 +716199,11 @@
    "manual"
   ],
   "web-nfc/NDEFReader_options.https.html": [
-   "b1452c0240d176316341a0ab6857433fbc99a5b5",
+   "81b051e28f4723624846d25aa49d16525c81d1a9",
    "testharness"
   ],
   "web-nfc/NDEFReader_scan.https.html": [
-   "a26a548c6392d8116e8c188d6dbbe03b4660d87f",
+   "7c78a1c6008429dc348efa2c02c83c47e0a565a4",
    "testharness"
   ],
   "web-nfc/NDEFReader_scan_iframe.https.html": [
@@ -716215,7 +716215,7 @@
    "testharness"
   ],
   "web-nfc/NDEFRecord_constructor.https.html": [
-   "6028e970b879b1f65dd48d64525995114b5e82e9",
+   "79ce8a076eda26a7657df6eba8b781f711a94abb",
    "testharness"
   ],
   "web-nfc/NDEFWriter-document-hidden-manual.https.html": [
@@ -716223,7 +716223,7 @@
    "manual"
   ],
   "web-nfc/NDEFWriter_push.https.html": [
-   "f8b461c42d5ee0265f1301458b8e92a812e650da",
+   "57c619f73f84a90de32d33957e4757eca1c8e464",
    "testharness"
   ],
   "web-nfc/README.md": [
@@ -716231,7 +716231,7 @@
    "support"
   ],
   "web-nfc/idlharness.https.window.js": [
-   "f59ad9b512ed5548b22ff43b84f8404258e9e6c9",
+   "74ffc21b2204ea894dcea32a4aface9bc69739c1",
    "testharness"
   ],
   "web-nfc/nfc_insecure_context.html": [
@@ -716239,7 +716239,7 @@
    "testharness"
   ],
   "web-nfc/resources/nfc-helpers.js": [
-   "bdd8290d9eb7f9fcae1e46820a64fc6cef8617e5",
+   "f90a050c4cad93e31937bca946f3c250bb64723c",
    "support"
   ],
   "web-nfc/resources/support-iframe.html": [
diff --git a/tests/wpt/metadata/css/css-transforms/animation/perspective-interpolation.html.ini b/tests/wpt/metadata/css/css-transforms/animation/perspective-interpolation.html.ini
index 1193e3dfa5c..03f2f3fe9d1 100644
--- a/tests/wpt/metadata/css/css-transforms/animation/perspective-interpolation.html.ini
+++ b/tests/wpt/metadata/css/css-transforms/animation/perspective-interpolation.html.ini
@@ -1,5 +1,5 @@
 [perspective-interpolation.html]
-  expected: ERROR
+  expected: CRASH
   [ perspective interpolation]
     expected: FAIL
 
diff --git a/tests/wpt/metadata/css/cssom-view/matchMedia-display-none-iframe.html.ini b/tests/wpt/metadata/css/cssom-view/matchMedia-display-none-iframe.html.ini
new file mode 100644
index 00000000000..e6e1f29e274
--- /dev/null
+++ b/tests/wpt/metadata/css/cssom-view/matchMedia-display-none-iframe.html.ini
@@ -0,0 +1,2 @@
+[matchMedia-display-none-iframe.html]
+  expected: ERROR
diff --git a/tests/wpt/metadata/dom/nodes/Document-contentType/contentType/contenttype_txt.html.ini b/tests/wpt/metadata/dom/nodes/Document-contentType/contentType/contenttype_txt.html.ini
new file mode 100644
index 00000000000..c3916f8555d
--- /dev/null
+++ b/tests/wpt/metadata/dom/nodes/Document-contentType/contentType/contenttype_txt.html.ini
@@ -0,0 +1,2 @@
+[contenttype_txt.html]
+  expected: CRASH
diff --git a/tests/wpt/metadata/fetch/content-type/response.window.js.ini b/tests/wpt/metadata/fetch/content-type/response.window.js.ini
index de468ea0db0..c42d4e59776 100644
--- a/tests/wpt/metadata/fetch/content-type/response.window.js.ini
+++ b/tests/wpt/metadata/fetch/content-type/response.window.js.ini
@@ -312,21 +312,18 @@
   [<iframe>: separate response Content-Type: */* text/html]
     expected: FAIL
 
-  [<iframe>: combined response Content-Type: */* text/html]
-    expected: FAIL
-
-  [<iframe>: separate response Content-Type: text/html;x=" text/plain]
-    expected: FAIL
-
   [<iframe>: separate response Content-Type: text/html;" text/plain]
     expected: FAIL
 
   [<iframe>: separate response Content-Type: text/html */*;charset=gbk]
     expected: FAIL
 
-  [<iframe>: separate response Content-Type: text/plain */*]
-    expected: FAIL
-
   [<iframe>: separate response Content-Type: text/html;" \\" text/plain]
     expected: FAIL
 
+  [<iframe>: separate response Content-Type: text/html */*]
+    expected: FAIL
+
+  [<iframe>: separate response Content-Type: text/plain */*;charset=gbk]
+    expected: FAIL
+
diff --git a/tests/wpt/metadata/fetch/content-type/script.window.js.ini b/tests/wpt/metadata/fetch/content-type/script.window.js.ini
index 279734168dc..2d5faa72ac7 100644
--- a/tests/wpt/metadata/fetch/content-type/script.window.js.ini
+++ b/tests/wpt/metadata/fetch/content-type/script.window.js.ini
@@ -53,9 +53,6 @@
   [combined text/javascript ]
     expected: FAIL
 
-  [separate text/javascript x/x]
-    expected: FAIL
-
-  [separate text/javascript;charset=windows-1252  text/javascript]
+  [separate text/javascript;charset=windows-1252 error text/javascript]
     expected: FAIL
 
diff --git a/tests/wpt/metadata/fetch/nosniff/parsing-nosniff.window.js.ini b/tests/wpt/metadata/fetch/nosniff/parsing-nosniff.window.js.ini
index 536384f36e1..2023a855086 100644
--- a/tests/wpt/metadata/fetch/nosniff/parsing-nosniff.window.js.ini
+++ b/tests/wpt/metadata/fetch/nosniff/parsing-nosniff.window.js.ini
@@ -11,6 +11,6 @@
   [X-Content-Type-Options%3A%20nosniff%0C]
     expected: FAIL
 
-  [X-Content-Type-Options%3A%20%2Cnosniff]
+  [X-Content-Type-Options%3A%20no%0D%0AX-Content-Type-Options%3A%20nosniff]
     expected: FAIL
 
diff --git a/tests/wpt/metadata/html/browsers/history/the-history-interface/traverse_the_history_5.html.ini b/tests/wpt/metadata/html/browsers/history/the-history-interface/traverse_the_history_3.html.ini
similarity index 71%
rename from tests/wpt/metadata/html/browsers/history/the-history-interface/traverse_the_history_5.html.ini
rename to tests/wpt/metadata/html/browsers/history/the-history-interface/traverse_the_history_3.html.ini
index dc2e45516de..51f8272a6de 100644
--- a/tests/wpt/metadata/html/browsers/history/the-history-interface/traverse_the_history_5.html.ini
+++ b/tests/wpt/metadata/html/browsers/history/the-history-interface/traverse_the_history_3.html.ini
@@ -1,4 +1,4 @@
-[traverse_the_history_5.html]
+[traverse_the_history_3.html]
   [Multiple history traversals, last would be aborted]
     expected: FAIL
 
diff --git a/tests/wpt/metadata/html/browsers/history/the-history-interface/traverse_the_history_4.html.ini b/tests/wpt/metadata/html/browsers/history/the-history-interface/traverse_the_history_4.html.ini
new file mode 100644
index 00000000000..385376c7321
--- /dev/null
+++ b/tests/wpt/metadata/html/browsers/history/the-history-interface/traverse_the_history_4.html.ini
@@ -0,0 +1,4 @@
+[traverse_the_history_4.html]
+  [Multiple history traversals, last would be aborted]
+    expected: FAIL
+
diff --git a/tests/wpt/metadata/html/browsers/the-window-object/apis-for-creating-and-navigating-browsing-contexts-by-name/open-features-non-integer-width.html.ini b/tests/wpt/metadata/html/browsers/the-window-object/apis-for-creating-and-navigating-browsing-contexts-by-name/open-features-non-integer-width.html.ini
index 28f93ee71b5..9d841e61bc0 100644
--- a/tests/wpt/metadata/html/browsers/the-window-object/apis-for-creating-and-navigating-browsing-contexts-by-name/open-features-non-integer-width.html.ini
+++ b/tests/wpt/metadata/html/browsers/the-window-object/apis-for-creating-and-navigating-browsing-contexts-by-name/open-features-non-integer-width.html.ini
@@ -1,32 +1,48 @@
 [open-features-non-integer-width.html]
   type: testharness
+  expected: TIMEOUT
   [HTML: window.open `features`: non-integer values for feature `width`]
     expected: FAIL
 
   [features "width=405^4" should set "width=405"]
-    expected: FAIL
+    expected: TIMEOUT
 
   [features "width=405.5" should set "width=405"]
-    expected: FAIL
+    expected: TIMEOUT
 
   [features "width=405e1" should set "width=405"]
-    expected: FAIL
+    expected: TIMEOUT
 
   [features "width=405  " should set "width=405"]
-    expected: FAIL
+    expected: TIMEOUT
 
   [features "width=405.32" should set "width=405"]
-    expected: FAIL
+    expected: TIMEOUT
 
   [features "width=405LLl" should set "width=405"]
-    expected: FAIL
+    expected: TIMEOUT
 
   [features "width=405*3" should set "width=405"]
-    expected: FAIL
+    expected: TIMEOUT
 
   [features "width=405e-1" should set "width=405"]
-    expected: FAIL
+    expected: TIMEOUT
 
   [features "width=405/5" should set "width=405"]
-    expected: FAIL
+    expected: TIMEOUT
+
+  [top=0,left=0: absence of feature "width" should be treated same as "width=0"]
+    expected: TIMEOUT
+
+  [features "width=_404" should NOT set "width=404"]
+    expected: TIMEOUT
+
+  [top=0,left=0,height=401,: absence of feature "width" should be treated same as "width=0"]
+    expected: TIMEOUT
+
+  [features "width=/404" should NOT set "width=404"]
+    expected: TIMEOUT
+
+  [features "width=L404" should NOT set "width=404"]
+    expected: TIMEOUT
 
diff --git a/tests/wpt/metadata/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_escaping-1.html.ini b/tests/wpt/metadata/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_escaping-1.html.ini
index 2a166bb97b7..fc37df7e3fa 100644
--- a/tests/wpt/metadata/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_escaping-1.html.ini
+++ b/tests/wpt/metadata/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_escaping-1.html.ini
@@ -1,6 +1,6 @@
 [iframe_sandbox_popups_escaping-1.html]
   type: testharness
-  expected: CRASH
+  expected: TIMEOUT
   [Check that popups from a sandboxed iframe escape the sandbox if\n       allow-popups-to-escape-sandbox is used]
     expected: TIMEOUT
 
diff --git a/tests/wpt/metadata/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_nonescaping-1.html.ini b/tests/wpt/metadata/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_nonescaping-1.html.ini
index 963d4cd20ef..9df1ac56f2a 100644
--- a/tests/wpt/metadata/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_nonescaping-1.html.ini
+++ b/tests/wpt/metadata/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_nonescaping-1.html.ini
@@ -1,6 +1,6 @@
 [iframe_sandbox_popups_nonescaping-1.html]
   type: testharness
-  expected: CRASH
+  expected: TIMEOUT
   [Check that popups from a sandboxed iframe do not escape the sandbox]
     expected: NOTRUN
 
diff --git a/tests/wpt/metadata/html/semantics/forms/form-submission-0/form-submission-algorithm.html.ini b/tests/wpt/metadata/html/semantics/forms/form-submission-0/form-submission-algorithm.html.ini
index e6022ce120f..b024b42f41f 100644
--- a/tests/wpt/metadata/html/semantics/forms/form-submission-0/form-submission-algorithm.html.ini
+++ b/tests/wpt/metadata/html/semantics/forms/form-submission-0/form-submission-algorithm.html.ini
@@ -1,5 +1,4 @@
 [form-submission-algorithm.html]
-  expected: TIMEOUT
   [If form's firing submission events is true, then return; 'submit' event]
     expected: FAIL
 
@@ -12,9 +11,6 @@
   [firing an event named submit; clicking a submit button]
     expected: FAIL
 
-  [Cannot navigate (after constructing the entry list)]
-    expected: TIMEOUT
-
   [firing an event named submit; form.requestSubmit(null)]
     expected: FAIL
 
diff --git a/tests/wpt/metadata/html/semantics/forms/the-button-element/button-submit-children.html.ini b/tests/wpt/metadata/html/semantics/forms/the-button-element/button-submit-children.html.ini
new file mode 100644
index 00000000000..dbb4c200800
--- /dev/null
+++ b/tests/wpt/metadata/html/semantics/forms/the-button-element/button-submit-children.html.ini
@@ -0,0 +1,5 @@
+[button-submit-children.html]
+  expected: TIMEOUT
+  [This test will pass if a form navigation successfully occurs when clicking a child element of a <button type=submit> element with a onclick event handler which prevents the default form submission and manually calls form.submit() instead.]
+    expected: TIMEOUT
+
diff --git a/tests/wpt/metadata/webaudio/the-audio-api/the-analysernode-interface/realtimeanalyser-fft-scaling.html.ini b/tests/wpt/metadata/webaudio/the-audio-api/the-analysernode-interface/realtimeanalyser-fft-scaling.html.ini
index a56bad443a2..66bd350083b 100644
--- a/tests/wpt/metadata/webaudio/the-audio-api/the-analysernode-interface/realtimeanalyser-fft-scaling.html.ini
+++ b/tests/wpt/metadata/webaudio/the-audio-api/the-analysernode-interface/realtimeanalyser-fft-scaling.html.ini
@@ -1,5 +1,4 @@
 [realtimeanalyser-fft-scaling.html]
-  expected: TIMEOUT
   [X 2048-point FFT peak position is not equal to 64. Got 0.]
     expected: FAIL
 
diff --git a/tests/wpt/metadata/webmessaging/without-ports/018.html.ini b/tests/wpt/metadata/webmessaging/with-ports/018.html.ini
similarity index 100%
rename from tests/wpt/metadata/webmessaging/without-ports/018.html.ini
rename to tests/wpt/metadata/webmessaging/with-ports/018.html.ini
diff --git a/tests/wpt/metadata/workers/baseurl/alpha/sharedworker-in-worker.html.ini b/tests/wpt/metadata/workers/baseurl/alpha/sharedworker-in-worker.html.ini
index 650c91da4a6..333edb3a26e 100644
--- a/tests/wpt/metadata/workers/baseurl/alpha/sharedworker-in-worker.html.ini
+++ b/tests/wpt/metadata/workers/baseurl/alpha/sharedworker-in-worker.html.ini
@@ -1,5 +1,4 @@
 [sharedworker-in-worker.html]
-  expected: ERROR
   [Base URL in workers: new SharedWorker()]
     expected: FAIL
 
diff --git a/tests/wpt/metadata/workers/constructors/Worker/Worker-constructor.html.ini b/tests/wpt/metadata/workers/constructors/Worker/Worker-constructor.html.ini
deleted file mode 100644
index 80f9a4f15b8..00000000000
--- a/tests/wpt/metadata/workers/constructors/Worker/Worker-constructor.html.ini
+++ /dev/null
@@ -1,2 +0,0 @@
-[Worker-constructor.html]
-  expected: ERROR
diff --git a/tests/wpt/web-platform-tests/docs/assets/createpr.png b/tests/wpt/web-platform-tests/docs/assets/createpr.png
index 7b232a86d0f..4403a95c146 100644
Binary files a/tests/wpt/web-platform-tests/docs/assets/createpr.png and b/tests/wpt/web-platform-tests/docs/assets/createpr.png differ
diff --git a/tests/wpt/web-platform-tests/docs/assets/pullrequestbtn.png b/tests/wpt/web-platform-tests/docs/assets/pullrequestbtn.png
index 0fb15da1538..07d9c6a2e94 100644
Binary files a/tests/wpt/web-platform-tests/docs/assets/pullrequestbtn.png and b/tests/wpt/web-platform-tests/docs/assets/pullrequestbtn.png differ
diff --git a/tests/wpt/web-platform-tests/docs/assets/reftest-tutorial-test-screenshot.png b/tests/wpt/web-platform-tests/docs/assets/reftest-tutorial-test-screenshot.png
index 611fffbd220..8d882822e12 100644
Binary files a/tests/wpt/web-platform-tests/docs/assets/reftest-tutorial-test-screenshot.png and b/tests/wpt/web-platform-tests/docs/assets/reftest-tutorial-test-screenshot.png differ
diff --git a/tests/wpt/web-platform-tests/docs/assets/testharness-tutorial-test-screenshot-1.png b/tests/wpt/web-platform-tests/docs/assets/testharness-tutorial-test-screenshot-1.png
index 5195ba25ae6..c469e94a553 100644
Binary files a/tests/wpt/web-platform-tests/docs/assets/testharness-tutorial-test-screenshot-1.png and b/tests/wpt/web-platform-tests/docs/assets/testharness-tutorial-test-screenshot-1.png differ
diff --git a/tests/wpt/web-platform-tests/docs/assets/testharness-tutorial-test-screenshot-2.png b/tests/wpt/web-platform-tests/docs/assets/testharness-tutorial-test-screenshot-2.png
index 0010a571731..612eda54487 100644
Binary files a/tests/wpt/web-platform-tests/docs/assets/testharness-tutorial-test-screenshot-2.png and b/tests/wpt/web-platform-tests/docs/assets/testharness-tutorial-test-screenshot-2.png differ
diff --git a/tests/wpt/web-platform-tests/docs/assets/web-platform.png b/tests/wpt/web-platform-tests/docs/assets/web-platform.png
index 2b14c5ef60d..8547f491835 100644
Binary files a/tests/wpt/web-platform-tests/docs/assets/web-platform.png and b/tests/wpt/web-platform-tests/docs/assets/web-platform.png differ
diff --git a/tests/wpt/web-platform-tests/dom/nodes/aria-element-reflection.tentative.html b/tests/wpt/web-platform-tests/dom/nodes/aria-element-reflection.tentative.html
index 7c8e690a28b..1ee896ea1be 100644
--- a/tests/wpt/web-platform-tests/dom/nodes/aria-element-reflection.tentative.html
+++ b/tests/wpt/web-platform-tests/dom/nodes/aria-element-reflection.tentative.html
@@ -164,20 +164,27 @@
   <script>
 
   test(function(t) {
-    // Deleting an element set via the content attribute.
+    const idlAttrElement = document.getElementById("idlAttrElement");
+
     assert_equals(deletionParent.getAttribute("aria-activedescendant"), "contentAttrElement");
     assert_equals(deletionParent.ariaActiveDescendantElement, contentAttrElement);
 
+    // Deleting an element set via the content attribute.
     deletionParent.removeChild(contentAttrElement);
     assert_equals(deletionParent.getAttribute("aria-activedescendant"), "contentAttrElement");
+
+    // As it was not explitly set, the attr-associated-element is computed from the content attribute,
+    // and since descendant1 has been removed from the DOM, it is not valid.
     assert_equals(deletionParent.ariaActiveDescendantElement, null);
 
     // Deleting an element set via the IDL attribute.
     deletionParent.ariaActiveDescendantElement = idlAttrElement;
     assert_equals(deletionParent.getAttribute("aria-activedescendant"), "idlAttrElement");
 
+    // The element is still retrieved because it was explicitly set, and was at that point
+    // in a valid scope.
     deletionParent.removeChild(idlAttrElement);
-    assert_equals(deletionParent.ariaActiveDescendantElement, null);
+    assert_equals(deletionParent.ariaActiveDescendantElement, idlAttrElement);
 
     // The content attribute will still reflect the id.
     assert_equals(deletionParent.getAttribute("aria-activedescendant"), "idlAttrElement");
@@ -227,14 +234,16 @@
     lightParent.ariaActiveDescendantElement = lightElement;
     assert_equals(lightParent.ariaActiveDescendantElement, lightElement);
 
-    // Move the referenced element into shadow DOM.
+    // Move the referenced element into shadow DOM. As it was explicitly set,
+    // it is still able to be gotten even though it is in a different scope.
     shadowRoot.appendChild(lightElement);
-    assert_equals(lightParent.ariaActiveDescendantElement, null);
+    assert_equals(lightParent.ariaActiveDescendantElement, lightElement);
     assert_equals(lightParent.getAttribute("aria-activedescendant"), "lightElement");
 
     // Move the referenced element back into light DOM.
     lightParent.appendChild(lightElement);
     assert_equals(lightParent.ariaActiveDescendantElement, lightElement);
+    assert_equals(lightParent.getAttribute("aria-activedescendant"), "lightElement");
   }, "Reparenting an element into a descendant shadow scope nullifies the element reference.");
   </script>
 
@@ -250,6 +259,7 @@
 
   <script>
   test(function(t) {
+    const billingElement = document.getElementById("billingElement")
     assert_array_equals(input1.ariaLabelledByElements, [billingElement, nameElement], "parsed content attribute sets element references.");
     assert_equals(input2.ariaLabelledByElements, null, "Testing empty content attribute after parsing.");
 
@@ -257,8 +267,10 @@
     assert_array_equals(input2.ariaLabelledByElements, [billingElement, addressElement], "Testing IDL setter/getter.");
     assert_equals(input2.getAttribute("aria-labelledby"), "billingElement addressElement");
 
+    // Remove the element from the DOM, but as it was explicitly set whilst in a valid scope
+    // it can still be retrieved.
     billingElement.remove();
-    assert_array_equals(input2.ariaLabelledByElements, [addressElement]);
+    assert_array_equals(input2.ariaLabelledByElements, [billingElement, addressElement]);
 
     input2.ariaLabelledByElements = [];
     assert_array_equals(input2.ariaLabelledByElements, [], "Testing IDL setter/getter for empty array.");
@@ -451,9 +463,9 @@
     innerShadowRoot.appendChild(description1);
     innerShadowRoot.appendChild(description2);
 
-    // Explicitly set elements are still present, but are not retrieved.
-    // content attribute is still stale because all elements were in a valid scope when they were set.
-    assert_array_equals(describedElement.ariaDescribedByElements, []);
+    // Explicitly set elements are still retrieved, because they were in a valid scope when they were set.
+    // The content attribute still reflects the ids.
+    assert_array_equals(describedElement.ariaDescribedByElements, [description1, description2]);
     assert_equals(describedElement.getAttribute("aria-describedby"), "buttonDescription1 buttonDescription2");
 
     // Move into the same shadow scope as the explicitly set elements to test that the elements are gettable
@@ -494,10 +506,9 @@
       headingElement.ariaLabelledByElements = [headingLabel1, headingLabel2];
       assert_equals(headingElement.getAttribute("aria-labelledby"), "headingLabel1 headingLabel2", "Elements are set again, so the content attribute is updated.");
 
-      // Remove the referring element from the DOM, elements are not gettable.
-      // This behaviour is still under discussion.
+      // Remove the referring element from the DOM, elements are gettable.
       headingElement.remove();
-      assert_array_equals(headingElement.ariaLabelledByElements, [], "Element is no longer in the document, so references should not be gettable.");
+      assert_array_equals(headingElement.ariaLabelledByElements, [headingLabel1, headingLabel2], "Element is no longer in the document, but references should be gettable.");
       assert_equals(headingElement.getAttribute("aria-labelledby"), "headingLabel1 headingLabel2");
 
       // Insert it back in.
@@ -505,10 +516,10 @@
       assert_array_equals(headingElement.ariaLabelledByElements, [headingLabel1, headingLabel2]);
       assert_equals(headingElement.getAttribute("aria-labelledby"), "headingLabel1 headingLabel2");
 
-      // Remove everything from the DOM, nothing should be gettable.
+      // Remove everything from the DOM, everything is still gettable.
       headingLabel1.remove();
       headingLabel2.remove();
-      assert_array_equals(headingElement.ariaLabelledByElements, []);
+      assert_array_equals(headingElement.ariaLabelledByElements, [headingLabel1, headingLabel2]);
       assert_equals(headingElement.getAttribute("aria-labelledby"), "headingLabel1 headingLabel2");
       assert_equals(document.getElementById("headingLabel1"), null);
       assert_equals(document.getElementById("headingLabel2"), null);
diff --git a/tests/wpt/web-platform-tests/resources/chromium/nfc-mock.js b/tests/wpt/web-platform-tests/resources/chromium/nfc-mock.js
index ce22a9c2cfe..f5666c18f5c 100644
--- a/tests/wpt/web-platform-tests/resources/chromium/nfc-mock.js
+++ b/tests/wpt/web-platform-tests/resources/chromium/nfc-mock.js
@@ -59,11 +59,11 @@ function toByteArray(data) {
 function compareNDEFRecords(providedRecord, receivedRecord) {
   assert_equals(providedRecord.recordType, receivedRecord.recordType);
 
-  // Compares media types without charset.
-  // Charset should be compared when watch method is implemented, in order
-  // to check that written and read strings are equal.
-  assert_equals(providedRecord.mediaType,
-      receivedRecord.mediaType.substring(0, providedRecord.mediaType.length));
+  if (providedRecord.mediaType === undefined) {
+    assert_equals(null, receivedRecord.mediaType);
+  } else {
+    assert_equals(providedRecord.mediaType, receivedRecord.mediaType);
+  }
 
   assert_not_equals(providedRecord.recordType, 'empty');
 
diff --git a/tests/wpt/web-platform-tests/web-nfc/NDEFMessage_constructor.https.html b/tests/wpt/web-platform-tests/web-nfc/NDEFMessage_constructor.https.html
index ce212136023..f32f179b957 100644
--- a/tests/wpt/web-platform-tests/web-nfc/NDEFMessage_constructor.https.html
+++ b/tests/wpt/web-platform-tests/web-nfc/NDEFMessage_constructor.https.html
@@ -22,7 +22,7 @@
         createMessage([createTextRecord(test_text_data)]));
     assert_equals(message.records.length, 1, 'one text record');
     assert_equals(message.records[0].recordType, 'text', 'messageType');
-    assert_equals(message.records[0].mediaType, 'text/plain', 'mediaType');
+    assert_equals(message.records[0].mediaType, null, 'mediaType');
     assert_equals(message.records[0].encoding, 'utf-8', 'encoding');
     assert_equals(message.records[0].lang, 'en', 'lang');
     assert_true(message.records[0].data instanceof DataView,
diff --git a/tests/wpt/web-platform-tests/web-nfc/NDEFReader_options.https.html b/tests/wpt/web-platform-tests/web-nfc/NDEFReader_options.https.html
index b1452c0240d..81b051e28f4 100644
--- a/tests/wpt/web-platform-tests/web-nfc/NDEFReader_options.https.html
+++ b/tests/wpt/web-platform-tests/web-nfc/NDEFReader_options.https.html
@@ -17,7 +17,7 @@ const NDEFReaderOptionTests =
             " recordType is set to 'empty'.",
       scanOptions: {recordType: "empty"},
       unmatchedScanOptions: {recordType: "mime"},
-      message: createMessage([createRecord('empty', '')])
+      message: createMessage([createRecord('empty')])
     },
     {
       desc: "Test that reading data succeed when NDEFScanOptions'" +
@@ -59,8 +59,7 @@ const NDEFReaderOptionTests =
             " recordType is set to a custom type for external type records.",
       scanOptions: {recordType: "w3.org:xyz"},
       unmatchedScanOptions: {recordType: "mime"},
-      message: createMessage([createRecord('w3.org:xyz', 'application/octet-stream',
-            test_buffer_data)])
+      message: createMessage([createRecord('w3.org:xyz', test_buffer_data)])
     },
     {
       desc: "Test that the url of NDEFScanOptions filters relevant data" +
@@ -85,7 +84,7 @@ const ReadMultiMessagesTests =
       desc: "Test that filtering 'empty' record from different messages" +
             " correctly with NDEFScanOptions' recordType is set to 'empty'.",
       scanOptions: {recordType: "empty"},
-      message: createMessage([createRecord('empty', '')]),
+      message: createMessage([createRecord('empty')]),
       unmatchedMessage: createMessage([createMimeRecordFromJson(test_json_data)]),
     },
     {
@@ -127,8 +126,7 @@ const ReadMultiMessagesTests =
       desc: "Test that filtering external record from different messages" +
             " correctly with NDEFScanOptions' recordType is set to the custom type.",
       scanOptions: {recordType: "w3.org:xyz"},
-      message: createMessage([createRecord('w3.org:xyz', 'application/octet-stream',
-            test_buffer_data)]),
+      message: createMessage([createRecord('w3.org:xyz', test_buffer_data)]),
       unmatchedMessage: createMessage([createTextRecord(test_text_data)])
     },
     {
diff --git a/tests/wpt/web-platform-tests/web-nfc/NDEFReader_scan.https.html b/tests/wpt/web-platform-tests/web-nfc/NDEFReader_scan.https.html
index a26a548c639..7c78a1c6008 100644
--- a/tests/wpt/web-platform-tests/web-nfc/NDEFReader_scan.https.html
+++ b/tests/wpt/web-platform-tests/web-nfc/NDEFReader_scan.https.html
@@ -190,7 +190,7 @@ nfc_test(async (t, mockNFC) => {
 
   const payloadMessage = createMessage([createTextRecord(test_text_data)]);
   const message = createMessage([createRecord('example.com:payloadIsMessage',
-          undefined, payloadMessage)]);
+          payloadMessage)]);
   mockNFC.setReadingMessage(message);
 
   reader.scan({signal : controller.signal});
@@ -204,7 +204,7 @@ nfc_test(async (t, mockNFC) => {
   const embeddedRecords = event.message.records[0].toRecords();
   assert_equals(embeddedRecords.length, 1);
   assert_equals(embeddedRecords[0].recordType, 'text', 'recordType');
-  assert_equals(embeddedRecords[0].mediaType, 'text/plain', 'mediaType');
+  assert_equals(embeddedRecords[0].mediaType, null, 'mediaType');
   const decoder = new TextDecoder();
   assert_equals(decoder.decode(embeddedRecords[0].data), test_text_data,
                   'data has the same content with the original dictionary');
diff --git a/tests/wpt/web-platform-tests/web-nfc/NDEFRecord_constructor.https.html b/tests/wpt/web-platform-tests/web-nfc/NDEFRecord_constructor.https.html
index 6028e970b87..79ce8a076ed 100644
--- a/tests/wpt/web-platform-tests/web-nfc/NDEFRecord_constructor.https.html
+++ b/tests/wpt/web-platform-tests/web-nfc/NDEFRecord_constructor.https.html
@@ -16,10 +16,31 @@
         'The record has neither type nor data.');
   }, 'NDEFRecord constructor with null init dict');
 
+  test(() => {
+    assert_throws(new TypeError, () => new NDEFRecord(
+          createRecord('empty', test_text_data, 'text/plain')),
+        'mediaType does not apply for empty record type.');
+    assert_throws(new TypeError, () => new NDEFRecord(
+          createRecord('text', test_text_data, 'text/plain')),
+        'mediaType does not apply for text record type.');
+    assert_throws(new TypeError, () => new NDEFRecord(
+          createRecord('url', test_url_data, 'text/plain')),
+        'mediaType does not apply for url record type.');
+    assert_throws(new TypeError, () => new NDEFRecord(
+          createRecord('absolute-url', test_url_data, 'text/plain')),
+        'mediaType does not apply for absolute-url record type.');
+    assert_throws(new TypeError, () => new NDEFRecord(
+          createRecord('unknown', test_buffer_data, 'application/octet-stream')),
+        'mediaType does not apply for unknown record type.');
+    assert_throws(new TypeError, () => new NDEFRecord(
+          createRecord('foo.example.com:bar', test_buffer_data, 'application/octet-stream')),
+        'mediaType does not apply for external record type.');
+  }, 'NDEFRecord constructor should only accept mediaType for mime record type');
+
   test(() => {
     const record = new NDEFRecord(createTextRecord(test_text_data));
     assert_equals(record.recordType, 'text', 'recordType');
-    assert_equals(record.mediaType, 'text/plain', 'mediaType');
+    assert_equals(record.mediaType, null, 'mediaType');
     assert_equals(record.encoding, 'utf-8', 'encoding');
     assert_equals(record.lang, 'en', 'lang');
     const decoder = new TextDecoder();
@@ -32,7 +53,7 @@
     const uint8Array = encoder.encode(test_text_data);
     const record = new NDEFRecord(createTextRecord(uint8Array.buffer));
     assert_equals(record.recordType, 'text', 'recordType');
-    assert_equals(record.mediaType, 'text/plain', 'mediaType');
+    assert_equals(record.mediaType, null, 'mediaType');
     assert_equals(record.encoding, 'utf-8', 'encoding');
     assert_equals(record.lang, 'en', 'lang');
     const decoder = new TextDecoder();
@@ -45,7 +66,7 @@
     const uint8Array = encoder.encode(test_text_data);
     const record = new NDEFRecord(createTextRecord(uint8Array));
     assert_equals(record.recordType, 'text', 'recordType');
-    assert_equals(record.mediaType, 'text/plain', 'mediaType');
+    assert_equals(record.mediaType, null, 'mediaType');
     assert_equals(record.encoding, 'utf-8', 'encoding');
     assert_equals(record.lang, 'en', 'lang');
     const decoder = new TextDecoder();
@@ -59,7 +80,7 @@
       const lang = 'fr';
       const record = new NDEFRecord(createTextRecord(test_text_data, encoding, lang));
       assert_equals(record.recordType, 'text', 'recordType');
-      assert_equals(record.mediaType, 'text/plain', 'mediaType');
+      assert_equals(record.mediaType, null, 'mediaType');
       assert_equals(record.encoding, encoding, 'encoding');
       assert_equals(record.lang, lang, 'lang');
       const decoder = new TextDecoder();
@@ -77,7 +98,7 @@
     });
     const record = new NDEFRecord(createTextRecord(test_text_data));
     assert_equals(record.recordType, 'text', 'recordType');
-    assert_equals(record.mediaType, 'text/plain', 'mediaType');
+    assert_equals(record.mediaType, null, 'mediaType');
     assert_equals(record.encoding, 'utf-8', 'encoding');
     assert_equals(record.lang, test_lang, 'lang');
     const decoder = new TextDecoder();
@@ -88,7 +109,7 @@
   test(() => {
     const record = new NDEFRecord(createUrlRecord(test_url_data));
     assert_equals(record.recordType, 'url', 'recordType');
-    assert_equals(record.mediaType, 'text/plain', 'mediaType');
+    assert_equals(record.mediaType, null, 'mediaType');
     const decoder = new TextDecoder();
     assert_equals(decoder.decode(record.data), test_url_data,
         'data has the same content with the original dictionary');
@@ -97,7 +118,7 @@
   test(() => {
     const record = new NDEFRecord(createUrlRecord(test_url_data, true));
     assert_equals(record.recordType, 'absolute-url', 'recordType');
-    assert_equals(record.mediaType, 'text/plain', 'mediaType');
+    assert_equals(record.mediaType, null, 'mediaType');
     const decoder = new TextDecoder();
     assert_equals(decoder.decode(record.data), test_url_data,
         'data has the same content with the original dictionary');
@@ -166,9 +187,9 @@
     let buffer_view = new Uint8Array(buffer);
     let original_data = new Uint8Array([1, 2, 3, 4]);
     buffer_view.set(original_data);
-    const record = new NDEFRecord(createRecord('foo.eXamPle.coM:bAr*-', undefined, buffer));
+    const record = new NDEFRecord(createRecord('foo.eXamPle.coM:bAr*-', buffer));
     assert_equals(record.recordType, 'foo.example.com:bAr*-', 'recordType');
-    assert_equals(record.mediaType, 'application/octet-stream', 'mediaType');
+    assert_equals(record.mediaType, null, 'mediaType');
     assert_array_equals(new Uint8Array(record.data.buffer), original_data,
         'data has the same content with the original buffer');
   }, 'NDEFRecord constructor with external record type');
@@ -176,29 +197,27 @@
   test(() => {
     assert_throws(new TypeError, () => new NDEFRecord(createRecord('EMptY')),
         'Unknown record type.');
-    assert_throws(new TypeError, () => new NDEFRecord(createRecord('TeXt', '', test_text_data)),
+    assert_throws(new TypeError, () => new NDEFRecord(createRecord('TeXt', test_text_data)),
         'Unknown record type.');
-    assert_throws(new TypeError, () => new NDEFRecord(createRecord('uRL', '', test_url_data)),
+    assert_throws(new TypeError, () => new NDEFRecord(createRecord('uRL', test_url_data)),
         'Unknown record type.');
-    assert_throws(new TypeError, () => new NDEFRecord(createRecord('jSoN', '', test_json_data)),
+    assert_throws(new TypeError, () => new NDEFRecord(createRecord('Mime', test_buffer_data)),
         'Unknown record type.');
-    assert_throws(new TypeError, () => new NDEFRecord(createRecord('OpaQUE', '', test_buffer_data)),
-        'Unknown record type.');
-    assert_throws(new TypeError, () => new NDEFRecord(createRecord('sMart-PosTER', '', test_url_data)),
+    assert_throws(new TypeError, () => new NDEFRecord(createRecord('sMart-PosTER', test_url_data)),
         'Unknown record type.');
   }, 'NDEFRecord constructor with record type string being treated as case sensitive');
 
   test(() => {
     assert_throws(new TypeError, () => new NDEFRecord(createRecord(
-        ':xyz', '', test_buffer_data)), 'The domain should not be empty.');
+        ':xyz', test_buffer_data)), 'The domain should not be empty.');
     assert_throws(new TypeError, () => new NDEFRecord(createRecord(
-        '[:xyz', '', test_buffer_data)), '"[" is not a valid FQDN.');
+        '[:xyz', test_buffer_data)), '"[" is not a valid FQDN.');
     assert_throws(new TypeError, () => new NDEFRecord(createRecord(
-        'example.com:', '', test_buffer_data)), 'The type should not be empty.');
+        'example.com:', test_buffer_data)), 'The type should not be empty.');
     assert_throws(new TypeError, () => new NDEFRecord(createRecord(
-        'example.com:xyz~', '', test_buffer_data)), 'The type should not contain \'~\'.');
+        'example.com:xyz~', test_buffer_data)), 'The type should not contain \'~\'.');
     assert_throws(new TypeError, () => new NDEFRecord(createRecord(
-        'example.com:xyz/', '', test_buffer_data)), 'The type should not contain \'/\'.');
+        'example.com:xyz/', test_buffer_data)), 'The type should not contain \'/\'.');
   }, 'NDEFRecord constructor with invalid external record type');
 
 </script>
diff --git a/tests/wpt/web-platform-tests/web-nfc/NDEFWriter_push.https.html b/tests/wpt/web-platform-tests/web-nfc/NDEFWriter_push.https.html
index f8b461c42d5..57c619f73f8 100644
--- a/tests/wpt/web-platform-tests/web-nfc/NDEFWriter_push.https.html
+++ b/tests/wpt/web-platform-tests/web-nfc/NDEFWriter_push.https.html
@@ -76,25 +76,21 @@ const invalid_type_messages =
 
       // https://w3c.github.io/web-nfc/#dfn-map-external-data-to-ndef
       // NDEFRecord must have data.
-      createMessage([createRecord('w3.org:xyz', '', undefined)]),
+      createMessage([createRecord('w3.org:xyz')]),
 
       // NDEFRecord.data for external record must be ArrayBuffer.
-      createMessage([createRecord('w3.org:xyz', '', test_text_data)]),
-      createMessage([createRecord('w3.org:xyz', '', test_number_data)]),
-      createMessage([createRecord('w3.org:xyz', '', test_json_data)]),
+      createMessage([createRecord('w3.org:xyz', test_text_data)]),
+      createMessage([createRecord('w3.org:xyz', test_number_data)]),
+      createMessage([createRecord('w3.org:xyz', test_json_data)]),
 
       // https://w3c.github.io/web-nfc/#the-ndefrecordtype-string
       // The record type is neither a known type ('text', 'mime' etc.) nor a
       // valid custom type for an external type record.
-      createMessage([createRecord('unmatched_type', '', test_buffer_data)])
+      createMessage([createRecord('unmatched_type', test_buffer_data)])
     ];
 
 const invalid_syntax_messages =
     [
-      // NDEFRecord.mediaType for 'text' record must be 'text/*'.
-      createMessage([createRecord('text', 'application/json',
-          test_text_data)]),
-
       // Data for 'url' or 'absolute-url' record, must be a valid URL.
       createMessage([createUrlRecord('Invalid URL:// Data')]),
       createMessage([createUrlRecord('Invalid URL:// Data', true)]),
@@ -294,7 +290,7 @@ nfc_test(async (t, mockNFC) => {
                                createUnknownRecord(test_buffer_data),
                                createUrlRecord(test_url_data),
                                createUrlRecord(test_url_data, true),
-                               createRecord('w3.org:xyz', '', test_buffer_data)],
+                               createRecord('w3.org:xyz', test_buffer_data)],
                                test_message_origin);
   await writer.push(message);
   assertNDEFMessagesEqual(message, mockNFC.pushedMessage());
@@ -412,13 +408,6 @@ nfc_test(async (t, mockNFC) => {
 }, "Test that recordType should be set to 'mime' if NDEFRecordInit.record's \
 recordType is undefined and NDEFRecordInit.record's data is not DOMString.");
 
-nfc_test(async (t, mockNFC) => {
-  const writer = new NDEFWriter();
-  await writer.push({ records: [{ recordType: "text", data: test_text_data }] });
-  assertNDEFMessagesEqual(test_text_data, mockNFC.pushedMessage());
-}, "Test that mediaType should be set to 'text/plain' if NDEFRecordInit.record's \
-recordType is 'text' and NDEFRecordInit.record's mediaType is undefined.");
-
 nfc_test(async (t, mockNFC) => {
   const writer = new NDEFWriter();
   await writer.push({ records: [{ recordType: "mime", data: test_buffer_data }] });
@@ -427,16 +416,6 @@ nfc_test(async (t, mockNFC) => {
 NDEFRecordInit.record's recordType is 'mime' and NDEFRecordInit.record's \
 mediaType is undefined.");
 
-nfc_test(async (t, mockNFC) => {
-  const writer = new NDEFWriter();
-  await writer.push({ records: [{ recordType: "w3.org:xyz", data: test_buffer_data }] });
-  const message = createMessage([createRecord('w3.org:xyz', 'application/octet-stream',
-      test_buffer_data)]);
-  assertNDEFMessagesEqual(message, mockNFC.pushedMessage());
-}, "Test that mediaType should be set to 'application/octet-stream' if \
-NDEFRecordInit.record's recordType is external type and NDEFRecordInit.record's \
-mediaType is undefined.");
-
 nfc_test(async (t, mockNFC) => {
   const writer = new NDEFWriter();
   mockNFC.setIsNDEFTech(false);
diff --git a/tests/wpt/web-platform-tests/web-nfc/idlharness.https.window.js b/tests/wpt/web-platform-tests/web-nfc/idlharness.https.window.js
index f59ad9b512e..74ffc21b220 100644
--- a/tests/wpt/web-platform-tests/web-nfc/idlharness.https.window.js
+++ b/tests/wpt/web-platform-tests/web-nfc/idlharness.https.window.js
@@ -7,7 +7,6 @@
 
 const record = {
   recordType: "text",
-  mediaType: "text/plain",
   data: "Hello World",
   id: "/custom/path"
 };
diff --git a/tests/wpt/web-platform-tests/web-nfc/resources/nfc-helpers.js b/tests/wpt/web-platform-tests/web-nfc/resources/nfc-helpers.js
index bdd8290d9eb..f90a050c4ca 100644
--- a/tests/wpt/web-platform-tests/web-nfc/resources/nfc-helpers.js
+++ b/tests/wpt/web-platform-tests/web-nfc/resources/nfc-helpers.js
@@ -84,7 +84,7 @@ function createMessage(records) {
   }
 }
 
-function createRecord(recordType, mediaType, data, encoding, lang) {
+function createRecord(recordType, data, mediaType, encoding, lang) {
   let record = {};
   if (recordType !== undefined)
     record.recordType = recordType;
@@ -100,28 +100,28 @@ function createRecord(recordType, mediaType, data, encoding, lang) {
 }
 
 function createTextRecord(data, encoding, lang) {
-  return createRecord('text', 'text/plain', data, encoding, lang);
+  return createRecord('text', data, undefined, encoding, lang);
 }
 
 function createMimeRecordFromJson(json) {
   return createRecord(
-      'mime', 'application/json',
-      new TextEncoder('utf-8').encode(JSON.stringify(json)));
+      'mime', new TextEncoder('utf-8').encode(JSON.stringify(json)),
+      'application/json');
 }
 
 function createMimeRecord(buffer) {
-  return createRecord('mime', 'application/octet-stream', buffer);
+  return createRecord('mime', buffer, 'application/octet-stream');
 }
 
 function createUnknownRecord(buffer) {
-  return createRecord('unknown', '', buffer);
+  return createRecord('unknown', buffer);
 }
 
 function createUrlRecord(url, isAbsUrl) {
   if (isAbsUrl) {
-    return createRecord('absolute-url', 'text/plain', url);
+    return createRecord('absolute-url', url);
   }
-  return createRecord('url', 'text/plain', url);
+  return createRecord('url', url);
 }
 
 function createNDEFPushOptions(target, timeout, ignoreRead) {