Change to use QuitClosure()/RunUntilIdle() instead of QuitWhenIdleClosure()

Addressing comments for https://crrev.com/c/1496440

Bug: 922118
Change-Id: Ifbba70d41d67f19ff824be19dc15d30b9c5c5c1a
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1500013
Reviewed-by: David Roger <droger@chromium.org>
Commit-Queue: Ayu Ishii <ayui@chromium.org>
Cr-Commit-Position: refs/heads/master@{#639113}
2 files changed