GitLab

Setup the frontend pipeline for showing document properties and show
some basic ones for now, including:
- Title
- Author
- Subject
- Application
- PDF Producer

Reshape the 'metadata' message to have a `DocumentMetadata` object in
its 'metadataData' field, which can be directly passed to the
`ViewerPropertiesDialogElement` without further processing on the
frontend.

Bug: 93619
Change-Id: Iffb8691f443781a700fc06a439506dd546f46865
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2610048
Commit-Queue: Daniel Hosseinian <dhoss@chromium.org>
Reviewed-by: dpapad <dpapad@chromium.org>
Cr-Commit-Position: refs/heads/master@{#841726}