GitLab

Adding closure compilation for:
viewer-zoom-toolbar
viewer-pdf-toolbar
viewer-toolbar-dropdown

Deleting viewer-bookmarks-content, since this appears to be just a
wrapper around dom-repeat.

Some cleanup/addition of annotations in viewer-bookmark.js

Bug: 721073
Change-Id: I88b593c99da3b25deda7e0fe1c6e5d3b3bfa0e33
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1762814
Commit-Queue: Rebekah Potter <rbpotter@chromium.org>
Reviewed-by: Dan Beam <dbeam@chromium.org>
Reviewed-by: Lei Zhang <thestig@chromium.org>
Cr-Commit-Position: refs/heads/master@{#691030}