service worker: Try enabling ReadResourceFailure test.

The bug indicates we were using a scoped_refptr on the wrong thread,
probably on the browser test's UI thread instead of IO. Try doing
more work on the IO thread and enabling the test on Android.

Bug: 720275
Change-Id: Iacb5956d239aa15ebcdafc4de089c348afa8eaed
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1621771
Commit-Queue: Matt Falkenhagen <falken@chromium.org>
Reviewed-by: Makoto Shimazu <shimazu@chromium.org>
Cr-Commit-Position: refs/heads/master@{#662133}
2 files changed