Reviewed by Simon Fraser.

        Update media/video-zoom-controls.html to set the video source before initializing the test.
        https://bugs.webkit.org/show_bug.cgi?id=52461

        * media/video-zoom-controls.html:

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@75824 268f45cc-cd09-0410-ab3c-d52691b4dbfc