GitLab

ScopedObserver is being deprecated in favor of two new classes:
- base::ScopedObservation for observers that only ever observe
  a single source.
- base::ScopedMultiSourceObservation for observers that do or may
  observe more than a single source.
This CL was uploaded by git cl split.

R=tapted@chromium.org

Bug: 1145565
Change-Id: Ic8f6127259269507bb4c44bdb4abd8371da08ab0
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2526961
Commit-Queue: Avi Drissman <avi@chromium.org>
Reviewed-by: Avi Drissman <avi@chromium.org>
Auto-Submit: Sigurður Ásgeirsson <siggi@chromium.org>
Cr-Commit-Position: refs/heads/master@{#825974}