Bug 1534036 [wpt PR 15696] - Update wpt metadata, a=testonly

wpt-pr: 15696
wpt-type: metadata

testing/web-platform/meta/css/css-properties-values-api/register-property-syntax-parsing.html.ini

@@ -398,3 +398,54 @@
   [syntax:'<length>+', initialValue:'' is invalid]
     expected: FAIL
 
+  [syntax:'<transform-list>+', initialValue:'scale(2)' is invalid]
+    expected: FAIL
+
+  [syntax:'\\1F914 hmm', initialValue:'🤔hmm' is valid]
+    expected: FAIL
+
+  [syntax:'<length>#+', initialValue:'10px' is invalid]
+    expected: FAIL
+
+  [syntax:' <length>+ | <color>#', initialValue:'red, blue' is valid]
+    expected: FAIL
+
+  [syntax:'|banana', initialValue:'banana' is invalid]
+    expected: FAIL
+
+  [syntax:'hmm\\1F914', initialValue:'hmm🤔' is valid]
+    expected: FAIL
+
+  [syntax:'\\1F914\\1F914', initialValue:'🤔🤔' is valid]
+    expected: FAIL
+
+  [syntax:'||', initialValue:'banana' is invalid]
+    expected: FAIL
+
+  [syntax:'\t<color>\n|   foo', initialValue:'foo' is valid]
+    expected: FAIL
+
+  [syntax:'\\1F914', initialValue:'🤔' is valid]
+    expected: FAIL
+
+  [syntax:'<length>+#', initialValue:'10px' is invalid]
+    expected: FAIL
+
+  [syntax:'\\1F914hmm', initialValue:'🤔hmm' is valid]
+    expected: FAIL
+
+  [syntax:'<transform-list>#', initialValue:'scale(2)' is invalid]
+    expected: FAIL
+
+  [syntax:'banan\\61', initialValue:'banana' is valid]
+    expected: FAIL
+
+  [syntax:'|', initialValue:'banana' is invalid]
+    expected: FAIL
+
+  [syntax:'<length>##', initialValue:'10px' is invalid]
+    expected: FAIL
+
+  [syntax:' |', initialValue:'banana' is invalid]
+    expected: FAIL
+