Another step towards porting blink CSP tests to WPT (script-src)

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:
- get rid of checkreport in tests that don't actually require it

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

Bug: 651742
Change-Id: I22a98dff6da08d766bf3912fde88bddb31fc7d1c
Reviewed-on: https://chromium-review.googlesource.com/738142
Commit-Queue: Andy Paicu <andypaicu@chromium.org>
Reviewed-by: Mike West <mkwst@chromium.org>
Cr-Commit-Position: refs/heads/master@{#512120}
34 files changed