Auto merge of #23518 - servo-wpt-sync:wpt_update_05-06-2019, r=servo-…

…wpt-sync

Sync WPT with upstream (05-06-2019)

Automated downstream sync of changes from upstream as of 05-06-2019.
[no-wpt-sync]

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tests/wpt/metadata/FileAPI/url/url-with-fetch.any.js.ini

@@ -37,6 +37,3 @@
   [Revoke blob URL after creating Request, will fetch]
     expected: FAIL
 
-  [Revoke blob URL after calling fetch, fetch should succeed]
-    expected: FAIL
-