Invert the pass condition of fullscreen/full-screen-render-inline-expected.html

The bug hasn't been fixed, but now any unrelated change to the test
result will result in a failure, instead of being silently ignored.

BUG=246077

Review URL: https://codereview.chromium.org/456743002

git-svn-id: svn://svn.chromium.org/blink/trunk@179914 bbb929c8-8fbe-4397-9dbb-9b2b20218538