Testing MacOSInlineMediaControls width change while the controls bar is hidden.

On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE".


Making the controls bar invisible.

Making the controls 100px wider

Making the controls bar visible again.
PASS mediaControls.rightContainer.x is expectedRightContainerX + 100

PASS successfullyParsed is true

TEST COMPLETE