GitLab

Calls LoadUrl() from PdfViewWebPlugin with the URL from the "stream-url"
attribute. Combined with crrev.com/c/2330933 (WIP), this is sufficient
to start testing URL loading locally.

Logs NOTIMPLEMENTED() from PdfViewWebPlugin's DocumentLoadComplete() and
DocumentLoadFailed(), to make the outcome of loading obvious.

Bug: 1099022
Change-Id: I94084fe42151daf5e4084749eb6ba466e2a918df
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2411329Reviewed-by: Lei Zhang <thestig@chromium.org>
Reviewed-by: Daniel Hosseinian <dhoss@chromium.org>
Commit-Queue: K. Moon <kmoon@chromium.org>
Cr-Commit-Position: refs/heads/master@{#806799}