Last(!!!!) step of many to porting blink CSP tests to WPT

This has been a long time overdue but there are too many things currently
blocking on this so it's time to look at the blink-contrib folders.

Goals are to:
- make blink-contrib folders contain valid tests that are not only
programatically generated
- get rid of the reliance on checkreport as much as possible in these tests

This should unblock `checkreport` changes that break the upstream
integration.

Bug: 651742
Change-Id: Ia3f5f97ca3f6c26dd5abc857d8270bd58ed26a2c
Reviewed-on: https://chromium-review.googlesource.com/730713
Commit-Queue: Andy Paicu <andypaicu@chromium.org>
Reviewed-by: Mike West <mkwst@chromium.org>
Cr-Commit-Position: refs/heads/master@{#510809}
166 files changed