tree 4814dfe03e7920d2541711596988cb49d0db8676
parent 3512b96da35dc030132304c82c3192c695bf863f
author Tom Sepez <tsepez@chromium.org> 1560362313 +0000
committer Chromium commit bot <commit-bot@chromium.org> 1560362313 +0000

Stop nesting ObservedPtr inside Observable.

Now, only the ObservedPtr<> is templated, and a templated
Observable isn't required. Templated Observable<> lead to
templated Obeservable<>::ObserverIface, which made usage of
ObservedPtr<> to subclasses awkward, since the ObserverIfaces
weren't subclasses of each other even if the dependent types
were.

The majority of the change is to fix syntax now that
we no longer have a typename in the classes derived from
Observable.

- Rename Observable::Observer to ObserverIface for clarity.

Change-Id: I59f70915f0a87fa2269d051acff5a7206a3e79e8
Reviewed-on: https://pdfium-review.googlesource.com/c/pdfium/+/55951
Reviewed-by: Lei Zhang <thestig@chromium.org>
Commit-Queue: Tom Sepez <tsepez@chromium.org>