GitLab

- Remove ampersand symbol (&) from IDS_EDIT string before adding to the
  PDF viewer UI.
- Don't toggle annotation mode if dialog is not confirmed
- Strings - remove ending '.' per UX feedback

Bug: 1048876
Change-Id: Ie8afacd21b10595e6c1ef8878ca5091027042224
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2429976
Commit-Queue: Rebekah Potter <rbpotter@chromium.org>
Reviewed-by: dpapad <dpapad@chromium.org>
Reviewed-by: Lei Zhang <thestig@chromium.org>
Cr-Commit-Position: refs/heads/master@{#810824}