[Import Maps] WPT: Do not check warnings

Because there are no ways to check console warnings from JavaScript.

Bug: 990561
Change-Id: I5f3827c4383e35c74521148aa2e3b912b52a5f13
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1843507
Commit-Queue: Hiroshige Hayashizaki <hiroshige@chromium.org>
Reviewed-by: Domenic Denicola <domenic@chromium.org>
Cr-Commit-Position: refs/heads/master@{#706592}

third_party/blink/web_tests/external/wpt/import-maps/imported/parsing-schema.tentative-expected.txt

-This is a testharness.js-based test.
-PASS Invalid JSON
-PASS Mismatching the top-level schema / should throw for top-level non-objects
-PASS Mismatching the top-level schema / should throw if imports is a non-object
-PASS Mismatching the top-level schema / should throw if scopes is a non-object
-FAIL Mismatching the top-level schema / should ignore unspecified top-level entries assert_object_equals: expected property "0" missing
-PASS Mismatching the specifier map schema / should ignore entries where the address is not a string, array, or null
-PASS Mismatching the specifier map schema / should ignore entries where the specifier key is an empty string
-PASS Mismatching the specifier map schema / should ignore members of an address array that are not strings
-PASS Mismatching the specifier map schema / should throw if a scope's value is not an object
-PASS Normalization / should normalize empty import maps to have imports and scopes keys
-PASS Normalization / should normalize an import map without imports to have imports
-PASS Normalization / should normalize an import map without scopes to have scopes
-PASS Normalization / should normalize addresses to arrays
-Harness: the test ran to completion.
-

third_party/blink/web_tests/external/wpt/import-maps/imported/parsing-scope-keys.tentative-expected.txt

-This is a testharness.js-based test.
-PASS Relative URL scope keys / should work with no prefix
-PASS Relative URL scope keys / should work with ./, ../, and / prefixes
-PASS Relative URL scope keys / should work with /s, ?s, and #s
-PASS Relative URL scope keys / should work with an empty string scope key
-PASS Relative URL scope keys / should work with / suffixes
-PASS Relative URL scope keys / should deduplicate based on URL parsing rules
-FAIL Absolute URL scope keys / should only accept absolute URL scope keys with fetch schemes assert_object_equals: expected property "0" missing
-FAIL Absolute URL scope keys / should parse absolute URL scope keys, ignoring unparseable ones assert_object_equals: expected property "0" missing
-FAIL Absolute URL scope keys / should ignore relative URL scope keys when the base URL is a data: URL assert_object_equals: expected property "0" missing
-Harness: the test ran to completion.
-

third_party/blink/web_tests/external/wpt/import-maps/imported/resources/helpers/parsing.js

@@ -38,13 +38,7 @@ exports.expectWarnings = (input, baseURL, output, warnings = []) => {
 };
 
 function testWarningHandler(expectedWarnings) {
-  const warnings = [];
-  const { warn } = console;
-  console.warn = warning => {
-    warnings.push(warning);
-  };
-  return () => {
-    console.warn = warn;
-    expect(warnings).toEqual(expectedWarnings);
-  };
+  // We don't check warnings on WPT tests, because there are no
+  // ways to catch console warnings from JavaScript.
+  return () => {};
 }

third_party/blink/web_tests/virtual/import-maps-without-builtin-modules/external/wpt/import-maps/imported/parsing-schema.tentative-expected.txt

@@ -3,7 +3,7 @@ PASS Invalid JSON
 PASS Mismatching the top-level schema / should throw for top-level non-objects
 PASS Mismatching the top-level schema / should throw if imports is a non-object
 PASS Mismatching the top-level schema / should throw if scopes is a non-object
-FAIL Mismatching the top-level schema / should ignore unspecified top-level entries assert_object_equals: expected property "0" missing
+PASS Mismatching the top-level schema / should ignore unspecified top-level entries
 FAIL Mismatching the specifier map schema / should ignore entries where the address is not a string, array, or null assert_equals: expected "{\"bar\":[\"https://example.com/\"]}" but got "{}"
 PASS Mismatching the specifier map schema / should ignore entries where the specifier key is an empty string
 FAIL Mismatching the specifier map schema / should ignore members of an address array that are not strings assert_equals: expected "{\"bar\":[\"https://example.com/\"],\"foo\":[\"https://example.com/\"]}" but got "{}"