Allow the PDF page indicator to accept a list of page labels

This allows the page indicator polymer element to accept a list of
page labels which get displayed. This is useful for print preview
where page labels may not be sequential indices.

BUG=303491
R=koz@chromium.org

Review URL: https://codereview.chromium.org/236723003
2 files changed
tree: 7ffcb441099417a66c63cb94f0899e204b0a61de
  1. elements/
  2. codereview.settings
  3. OWNERS