GitLab

The upstream implementation of promise_test() in web-platform-test has
changed to run the tests sequentially, removing the need for the
sequential_promise_test() helper. Tests now just use promise_test()
directly.

BUG=451338
R=ortuno@chromium.org

Review URL: https://codereview.chromium.org/1295373003

git-svn-id: svn://svn.chromium.org/blink/trunk@200765 bbb929c8-8fbe-4397-9dbb-9b2b20218538