Worker: Add CSP tests for ES Modules on dedicated workers

Bug: 680046
Change-Id: I066d4b7750bbec00397466daac48e9d0a2ba70c0
Reviewed-on: https://chromium-review.googlesource.com/1078947
Commit-Queue: Hiroki Nakagawa <nhiroki@chromium.org>
Reviewed-by: Matt Falkenhagen <falken@chromium.org>
Cr-Commit-Position: refs/heads/master@{#563531}
5 files changed