GitLab

Add a new Polymer element, page-size-select, to display the page sizes
in a dropdown.

Bug: 1059779
Change-Id: Ia546795ab44e350adbf8256867e7e5fccb42dc02
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2492944Reviewed-by: Kyle Horimoto <khorimoto@chromium.org>
Reviewed-by: Jimmy Gong <jimmyxgong@chromium.org>
Commit-Queue: Jesse Schettler <jschettler@chromium.org>
Cr-Commit-Position: refs/heads/master@{#820494}