VAVDA: Go back to using vaTerminate now that the bug in the driver is fixed.

VAVDA: Go back to using vaTerminate now that the bug in the driver is fixed.

https://gerrit.chromium.org/gerrit/#change,28275 fixes libva-intel-driver
to not free the buffer manager before cleaning up BOs, so now vaTerminate
can safely be called.

Also, since we are using X functions and X Pixmaps with VAAPI, there is no need
to use the glx va library just to get the X display. This could have also
potentially got us into trouble in the future, so getting rid of it.

BUG=138758
TEST=Manual runs


Committed: http://src.chromium.org/viewvc/chrome?view=rev&revision=148688

[Ami GONE FROM CHROMIUM, 2012-07-26 20:16:42]

lgtm

[commit-bot: I haz the power, 2012-07-26 20:19:34]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/posciak@chromium.org/10824051/1

[commit-bot: I haz the power, 2012-07-26 20:45:40]

Try job failure for 10824051-1 (retry) on linux_clang for step "compile"
(clobber build).
It's a second try, previously, step "compile" failed.
http://build.chromium.org/p/tryserver.chromium/buildstatus?builder=linux_clan...

[commit-bot: I haz the power, 2012-07-26 22:18:05]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/posciak@chromium.org/10824051/1

[commit-bot: I haz the power, 2012-07-27 01:26:44]

Change committed as 148688