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We've moved from using Bind to BindOnce and BindRepeating. This
implements that change in chromeos/printing.

BUG=chromium:804035
TEST=passes unit tests

Change-Id: Icaf15b00252398c9685a0482e114e7fef7ddea74
Reviewed-on: https://chromium-review.googlesource.com/884825
Commit-Queue: Luum Habtemariam <luum@chromium.org>
Reviewed-by: Sean Kau <skau@chromium.org>
Cr-Commit-Position: refs/heads/master@{#531995}