Worker: Run wpt/resource-timing/ with the flags for off-the-main-thread worker script fetch

resource_dedicated_worker.html is failing because of https://crbug.com/928146

Bug: 835717, 928146
Change-Id: Ibc529a130694c896df2806270598d19399fbb61a
Reviewed-on: https://chromium-review.googlesource.com/c/1475565
Auto-Submit: Hiroki Nakagawa <[email protected]>
Reviewed-by: Kenichi Ishibashi <[email protected]>
Commit-Queue: Kenichi Ishibashi <[email protected]>
Commit-Queue: Hiroki Nakagawa <[email protected]>
Cr-Commit-Position: refs/heads/master@{#633018}
2 files changed