service worker: Upstream websocket test.

Bug: 671588, 688116
Change-Id: I125143bc9d8768bf8e08dfe2daca1b79605634d5
Reviewed-on: https://chromium-review.googlesource.com/753262
Reviewed-by: Adam Rice <ricea@chromium.org>
Commit-Queue: Matt Falkenhagen <falken@chromium.org>
Cr-Commit-Position: refs/heads/master@{#514903}
2 files changed