REGRESSION (r167828): http/tests/media/hls/video-controls-live-stream.html fails

* English.lproj/mediaControlsLocalizedStrings.js:
Add 'Live Broadcast' to the localized strings list.


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@167837 268f45cc-cd09-0410-ab3c-d52691b4dbfc