GitLab

Bug: Internal b/162079069

Merge-With: eureka-internal/424693

Test: Check whether the observer receive the signal on device.

Change-Id: I44c15917a4104cfb94ca619d986587fd96b6857b
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2349415Reviewed-by: Yuchen Liu <yucliu@chromium.org>
Reviewed-by: Kenneth MacKay <kmackay@chromium.org>
Commit-Queue: Ziyang Cheng <ziyangch@chromium.org>
Cr-Commit-Position: refs/heads/master@{#798007}