GitLab

- This CL implements support of Priority::NoThrottle notifications in
display_decider flow and background_task_coordinator flow.
- Added unittest.

Bug: 1005008
Change-Id: Iab85bc9dded29729ed62178d807a5153df1acbe6
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1810079
Commit-Queue: Hesen Zhang <hesen@chromium.org>
Auto-Submit: Hesen Zhang <hesen@chromium.org>
Reviewed-by: Xing Liu <xingliu@chromium.org>
Cr-Commit-Position: refs/heads/master@{#701338}