Extensions: Add a test for importing modules from web

Bug: 769012
Change-Id: Iae7e7ff1b338c2302476002c28dcc58378292404
Reviewed-on: https://chromium-review.googlesource.com/1028617
Commit-Queue: Istiaque Ahmed <lazyboy@chromium.org>
Reviewed-by: Devlin <rdevlin.cronin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#556156}
2 files changed