Bug 1436405 [wpt PR 9419]- Update wpt metadata, a=testonly

wpt-pr: 9419
wpt-type: metadata

testing/web-platform/meta/css/css-pseudo/first-letter-property-whitelist.html.ini

@@ -0,0 +1,37 @@
+[first-letter-property-whitelist.html]
+  [Whitelisted property backgroundImage should be applied to first-letter pseudo elements.]
+    expected: FAIL
+
+  [Whitelisted property backgroundPosition should be applied to first-letter pseudo elements.]
+    expected: FAIL
+
+  [Whitelisted property border should be applied to first-letter pseudo elements.]
+    expected: FAIL
+
+  [Whitelisted property borderImage should be applied to first-letter pseudo elements.]
+    expected: FAIL
+
+  [Whitelisted property borderRadius should be applied to first-letter pseudo elements.]
+    expected: FAIL
+
+  [Whitelisted property font should be applied to first-letter pseudo elements.]
+    expected: FAIL
+
+  [Whitelisted property fontVariationSettings should be applied to first-letter pseudo elements.]
+    expected: FAIL
+
+  [Whitelisted property margin should be applied to first-letter pseudo elements.]
+    expected: FAIL
+
+  [Whitelisted property padding should be applied to first-letter pseudo elements.]
+    expected: FAIL
+
+  [Whitelisted property opacity should be applied to first-letter pseudo elements.]
+    expected: FAIL
+
+  [Whitelisted property textJustify should be applied to first-letter pseudo elements.]
+    expected: FAIL
+
+  [Whitelisted property textUnderlinePosition should be applied to first-letter pseudo elements.]
+    expected: FAIL
+