First 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

Bug: 651742
Change-Id: I8a00e39bee6e7507ee0118ed7eecf9a3ed8f9868
Reviewed-on: https://chromium-review.googlesource.com/725705
Commit-Queue: Andy Paicu <andypaicu@chromium.org>
Reviewed-by: Mike West <mkwst@chromium.org>
Cr-Commit-Position: refs/heads/master@{#510368}
54 files changed