Added new Sec-Metadata Web Platform Tests.

Added tests for:
- object, embed,
- font
- style
- redirect
- report
- xslt
- sharedworker
- worker
- serviceworker
- track
- audio, video tests are unstable and will be available in my GH repo (https://github.com/mtrzos/wpt/tree/sec-metadata-media/fetch/sec-metadata)

Bug: 860710, 860715
Change-Id: I177dfe39629fb704e4e66a90981c279f4d8d8eb1
Reviewed-on: https://chromium-review.googlesource.com/1129238
Reviewed-by: Mike West <mkwst@chromium.org>
Commit-Queue: Mike West <mkwst@chromium.org>
Cr-Commit-Position: refs/heads/master@{#578341}
29 files changed