REGRESSION (r147261): Audio controls background not displayed after loading audio file
https://bugs.webkit.org/show_bug.cgi?id=115221

Reviewed by Darin Adler.

As in r147261, set a flex-shrink: 0 to avoid shrinking the media controls panel
below the specified height.

No new tests; fixes the media/media-document-audio-repaint.html test.

* css/mediaControlsQuickTime.css:
(audio::-webkit-media-controls-panel, video::-webkit-media-controls-panel):


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@149237 268f45cc-cd09-0410-ab3c-d52691b4dbfc