reset m_havePreparedToPlay when changing media engines.
Created attachment 231932 [details] Patch
Is it better to reset this property or to call prepare() on the newly created player?
radar://16755602
Comment on attachment 231932 [details] Patch Clearing flags on attachment: 231932 Committed r169264: <http://trac.webkit.org/changeset/169264>
All reviewed patches have been landed. Closing bug.