Followup review suggestions from Alexey Proskuryakov on
https://bugs.webkit.org/show_bug.cgi?id=109215

Don't provide a charset on embedded SVG, especially
with incorrect syntax :)

* css/mediaControlsQuickTime.css:
(video::-webkit-media-controls-toggle-closed-captions-button):
(video::-webkit-media-controls-closed-captions-track-list li.selected):
(video::-webkit-media-controls-closed-captions-track-list li.selected:hover):

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@142221 268f45cc-cd09-0410-ab3c-d52691b4dbfc