GitLab

This CL:
 - renames "test-expectations.html" so that it is called "results.html"
 - renames the old results.html to be "legacy-results.html"

blink-dev thread:
https://groups.google.com/a/chromium.org/forum/#!topic/blink-dev/9NFDSTEzcd4

Bug: 748628
Change-Id: Id8293ed24f680b71cf1bdb3e134cdb130154ee14
Reviewed-on: https://chromium-review.googlesource.com/775973
Commit-Queue: Quinten Yearsley <qyearsley@chromium.org>
Reviewed-by: Aleks Totic <atotic@chromium.org>
Cr-Commit-Position: refs/heads/master@{#517462}