GitLab

chromium:2025697 has introduced a new observer interface called
arc::ArcSessionManager::Observer::OnPropertyFilesExpanded().
This CL is to make it so that all arc::ArcSessionManager
instances in unit_ and browser_tests properly call the new
observer interface just like the production code does.

This is not currently mandatory but makes the test code more
future proof.

BUG=b:144199481
TEST=try

Change-Id: I93c18a12ff406b36a1c484c24ab4b9f806fa38bb
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2033691Reviewed-by: Kyle Horimoto <khorimoto@chromium.org>
Reviewed-by: Hidehiko Abe <hidehiko@chromium.org>
Reviewed-by: Xiyuan Xia <xiyuan@chromium.org>
Commit-Queue: Yusuke Sato <yusukes@chromium.org>
Cr-Commit-Position: refs/heads/master@{#737881}