[Code Health] FontAccess: Consolidate WPT feature detection assertions

This change consolidates feature detection assertions in Local Font
Access WPT tests in the test helper to diminish line noise.

Change-Id: I9a95504c7ddc82c741ee5ca32d456b20f557905b
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2643794
Auto-Submit: Olivier Yiptong <oyiptong@chromium.org>
Commit-Queue: Joshua Bell <jsbell@chromium.org>
Reviewed-by: Joshua Bell <jsbell@chromium.org>
Cr-Commit-Position: refs/heads/master@{#846341}

third_party/blink/web_tests/external/wpt/font-access/resources/test-expectations.js

@@ -492,6 +492,11 @@ async function simulateUserActivation() {
 
 function font_access_test(test_function, name, properties) {
   return promise_test(async (t) => {
+    if (!isPlatformSupported()) {
+      await promise_rejects_dom(
+          t, 'NotSupportedError', navigator.fonts.query());
+      return;
+    }
     await test_driver.set_permission({name: 'font-access'}, 'granted');
     await simulateUserActivation();
     await test_function(t, name, properties);

third_party/blink/web_tests/external/wpt/font-access/resources/window-tests-blob.js

 'use strict';
 
 font_access_test(async t => {
-  if (!isPlatformSupported()) {
-    await promise_rejects_dom(t, 'NotSupportedError', navigator.fonts.query());
-    return;
-  }
-
   const fonts = await navigator.fonts.query({persistentAccess: true});
   const expectedFonts = await filterEnumeration(
       fonts, getEnumerationTestSet({labelFilter: [TEST_SIZE_CATEGORY.small]}));

third_party/blink/web_tests/external/wpt/font-access/resources/window-tests-enumeration.js

@@ -9,12 +9,6 @@ for (const test of standard_fonts_tests) {
   const inputAsString = JSON.stringify(test) ? JSON.stringify(test) : test;
 
   font_access_test(async t => {
-    if (!isPlatformSupported()) {
-      await promise_rejects_dom(
-          t, 'NotSupportedError', navigator.fonts.query());
-      return;
-    }
-
     const fonts =
         await navigator.fonts.query({persistentAccess: true, ...test});
 
@@ -23,11 +17,6 @@ for (const test of standard_fonts_tests) {
 }
 
 font_access_test(async t => {
-  if (!isPlatformSupported()) {
-    await promise_rejects_dom(t, 'NotSupportedError', navigator.fonts.query());
-    return;
-  }
-
   const fonts = await navigator.fonts.query({persistentAccess: true});
   // The following tests that fonts are sorted. Postscript names are expected to
   // be encoded in a subset of the ASCII character set.
@@ -48,11 +37,6 @@ font_access_test(async t => {
 }, 'query(): fonts are sorted');
 
 font_access_test(async t => {
-  if (!isPlatformSupported()) {
-    await promise_rejects_dom(t, 'NotSupportedError', navigator.fonts.query());
-    return;
-  }
-
   const test = {
     persistentAccess: true,
     select: [getEnumerationTestSet()[0].postscriptName]
@@ -85,12 +69,6 @@ const non_ascii_input = [
 
 for (const test of non_ascii_input) {
   font_access_test(async t => {
-    if (!isPlatformSupported()) {
-      await promise_rejects_dom(
-          t, 'NotSupportedError', navigator.fonts.query());
-      return;
-    }
-
     const fonts =
         await navigator.fonts.query({persistentAccess: true, ...test});
     assert_equals(