Import wpt@3e77495f7f1920daa0c706e7b287dee0ef3279e2

Using wpt-import in Chromium d84d8527.

Note to sheriffs: This CL imports external tests and adds
expectations for those tests; if this CL is large and causes
a few new failures, please fix the failures by adding new
lines to TestExpectations rather than reverting. See:
https://chromium.googlesource.com/chromium/src/+/master/docs/testing/web_platform_tests.md

NOAUTOREVERT=true
TBR=robertma

No-Export: true
Change-Id: I54f76fa3a3d22aebe204cfcba4bace9cfabbcc52
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1986140Reviewed-by: WPT Autoroller <wpt-autoroller@chops-service-accounts.iam.gserviceaccount.com>
Commit-Queue: WPT Autoroller <wpt-autoroller@chops-service-accounts.iam.gserviceaccount.com>
Cr-Commit-Position: refs/heads/master@{#728380}

third_party/blink/web_tests/external/wpt/common/security-features/README.md

@@ -143,7 +143,7 @@ For examples of spec JSON files, see [referrer-policy/spec.src.json](../../refer
 
 * **`excluded_tests`**
 
-  List of ```test_expansion``` patterns expanding into selections which get skipped when generating the tests (aka. blacklisting/suppressing)
+  List of ```test_expansion``` patterns expanding into selections which get skipped when generating the tests (aka. blocklisting/suppressing)
 
 * **`test_expansion_schema`**
 
@@ -188,9 +188,9 @@ A **selection** is a single **test instance** (scenario) with explicit values th
 
 Taking the spec JSON, the generator follows this algorithm:
 
-* Expand all ```excluded_tests``` to create a blacklist of selections
+* Expand all ```excluded_tests``` to create a blocklist of selections
 
-* For each specification requirement: Expand the ```test_expansion``` pattern into selections and check each against the blacklist, if not marked as suppresed, generate the test resources for the selection
+* For each specification requirement: Expand the ```test_expansion``` pattern into selections and check each against the blocklist, if not marked as suppresed, generate the test resources for the selection
 
 
 ### Source Contexts