Tag some overridden methods with SK_OVERRIDE in SkOSWindow_Unix.h

Tag some overridden methods with SK_OVERRIDE in SkOSWindow_Unix.h

BUG=319
R=tomhudson@google.com

Signed-off-by: Thiago Farina <tfarina@chromium.org>

Committed: http://code.google.com/p/skia/source/detail?r=3318

[tfarina1, 2012-03-05 01:22:13]

Hi Tom, could you review this to me?

[TomH, 2012-03-05 12:08:59]

LGTM.

Thanks for cleaning up after us!
Do you have commit rights, or shall I commit it for you?

[tfarina1, 2012-03-05 12:26:54]

On 2012/03/05 12:08:59, TomH wrote:
> LGTM.
> 
> Thanks for cleaning up after us!
> Do you have commit rights, or shall I commit it for you?

Please, could you commit this for me? I'm a committer only on chromium. :)

[TomH, 2012-03-05 18:29:58]

Committed in r3318.
Please close the issue when you get a chance.