Print Preview Componentization: cleanup is_ios

Bug: 773928
Cq-Include-Trybots: master.tryserver.chromium.linux:closure_compilation
Change-Id: I178d4aaa4e1227069f03628254a864737dfc14c9
Reviewed-on: https://chromium-review.googlesource.com/1077824
Reviewed-by: Demetrios Papadopoulos <dpapad@chromium.org>
Commit-Queue: Rebekah Potter <rbpotter@chromium.org>
Cr-Commit-Position: refs/heads/master@{#562950}
5 files changed