Svetoslav 948c9a6393 Add duplex mode support.
This change adds support for duplex printing. The print UI now has a duplex
option which allows the user to choose one of the supported duplex options
by the currently selected printer. The chosen duplex mode is propaged to the
print service that manages this printer.

Change-Id: I807ba9da2723531535c0e1e33f2f4e1b503a54b0
2015-02-04 05:48:48 +00:00
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