Update TimedMediaHandler with embed breakage fixes

Contains to fixes for videos embedded as iframes (?embedplayer=yes):

I2de89c14bf2dc3307194137a891caaca5ffb48bf
Avoid double processing <video> tags in iframes

I0ff8af367f58a379bf08f5c842fa195e56899351
Do not break iframes in the iframe output of TMH

Bug: 66143
Change-Id: Iaacc563facfd489b929cffd5f9f2bfc064aa175e