The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/00963708e9af115abc9bf2bc94daefeaeb946073

commit 00963708e9af115abc9bf2bc94daefeaeb946073
Author: xlou <xlou@chromium.org>
Date: Fri May 11 21:23:32 2018

Add N-up support to the new print preview UI.

In printing, 2-up, 3-up, or more generally N-up refers to a page
layout strategy in which multiple pages are composited onto a
single page.

1. Added new select label and button "Pages Per Sheet".
2. Added functionality to pass UI settings to the print preview
   renderer.
3. Added a new constant for N-up printing feature.

Design doc for N-up printing feature is here:
https://docs.google.com/document/d/1rA91PzWDLh6CFrAupgUwv7XYSIqbSpffEnDEQrpEdEQ/

Bug:  830090 
Cq-Include-Trybots: master.tryserver.chromium.linux:closure_compilation
Change-Id: I4c9621fcfc8aa9f657960883e6c1ee981905d2bf
Reviewed-on: https://chromium-review.googlesource.com/1050933
Reviewed-by: Rebekah Potter <rbpotter@chromium.org>
Reviewed-by: Lei Zhang <thestig@chromium.org>
Commit-Queue: Shirleen Lou <xlou@chromium.org>
Cr-Commit-Position: refs/heads/master@{#558022}
[modify] https://crrev.com/00963708e9af115abc9bf2bc94daefeaeb946073/chrome/app/generated_resources.grd
[modify] https://crrev.com/00963708e9af115abc9bf2bc94daefeaeb946073/chrome/browser/printing/print_test_utils.cc
[modify] https://crrev.com/00963708e9af115abc9bf2bc94daefeaeb946073/chrome/browser/resources/print_preview/new/BUILD.gn
[modify] https://crrev.com/00963708e9af115abc9bf2bc94daefeaeb946073/chrome/browser/resources/print_preview/new/app.html
[modify] https://crrev.com/00963708e9af115abc9bf2bc94daefeaeb946073/chrome/browser/resources/print_preview/new/app.js
[modify] https://crrev.com/00963708e9af115abc9bf2bc94daefeaeb946073/chrome/browser/resources/print_preview/new/model.js
[add] https://crrev.com/00963708e9af115abc9bf2bc94daefeaeb946073/chrome/browser/resources/print_preview/new/pages_per_sheet_settings.html
[add] https://crrev.com/00963708e9af115abc9bf2bc94daefeaeb946073/chrome/browser/resources/print_preview/new/pages_per_sheet_settings.js
[modify] https://crrev.com/00963708e9af115abc9bf2bc94daefeaeb946073/chrome/browser/resources/print_preview/new/preview_area.js
[modify] https://crrev.com/00963708e9af115abc9bf2bc94daefeaeb946073/chrome/browser/resources/print_preview/new/settings_behavior.js
[modify] https://crrev.com/00963708e9af115abc9bf2bc94daefeaeb946073/chrome/browser/resources/print_preview/print_preview_resources.grd
[modify] https://crrev.com/00963708e9af115abc9bf2bc94daefeaeb946073/chrome/browser/ui/webui/print_preview/print_preview_handler.cc
[modify] https://crrev.com/00963708e9af115abc9bf2bc94daefeaeb946073/chrome/browser/ui/webui/print_preview/print_preview_ui.cc
[modify] https://crrev.com/00963708e9af115abc9bf2bc94daefeaeb946073/printing/print_job_constants.cc
[modify] https://crrev.com/00963708e9af115abc9bf2bc94daefeaeb946073/printing/print_job_constants.h
[modify] https://crrev.com/00963708e9af115abc9bf2bc94daefeaeb946073/printing/print_settings_conversion.cc
[modify] https://crrev.com/00963708e9af115abc9bf2bc94daefeaeb946073/printing/printing_context.cc
[modify] https://crrev.com/00963708e9af115abc9bf2bc94daefeaeb946073/tools/metrics/histograms/enums.xml