CL: https://chromium-review.googlesource.com/c/612031

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/aaf15e0ab307d48d7e69e216d393b86768ae5f2f

commit aaf15e0ab307d48d7e69e216d393b86768ae5f2f
Author: Hiroki Nakagawa <nhiroki@chromium.org>
Date: Mon Aug 14 06:56:18 2017

Worklet: Add layout tests for addModule() with various URLs

This CL adds layout tests for addModule() with Blob URL, file:// URL, Data URL,
'about:blank', and Filesystem URL.

Bug:  738770 
Change-Id: I19b0cfbbff473c2a8e4053ccae74d0aa8fbeb578
Reviewed-on: https://chromium-review.googlesource.com/612031
Commit-Queue: Hiroki Nakagawa <nhiroki@chromium.org>
Commit-Queue: Kouhei Ueno <kouhei@chromium.org>
Reviewed-by: Kouhei Ueno <kouhei@chromium.org>
Cr-Commit-Position: refs/heads/master@{#494019}
[add] https://crrev.com/aaf15e0ab307d48d7e69e216d393b86768ae5f2f/third_party/WebKit/LayoutTests/http/tests/worklet/chromium/import-filesystem-url.html
[modify] https://crrev.com/aaf15e0ab307d48d7e69e216d393b86768ae5f2f/third_party/WebKit/LayoutTests/http/tests/worklet/resources/import-tests.js