LeakDetector: Add a new expectation for resolve-after-window-close.html


BUG=400012
TEST=n/a
NOTRY=true

Review URL: https://codereview.chromium.org/437213003

git-svn-id: svn://svn.chromium.org/blink/trunk@179465 bbb929c8-8fbe-4397-9dbb-9b2b20218538