[Files app] Removed callback from volumeManagerFactory.getInstance()

Change-Id: Id668076353fc0a3a956fe7c742a3971c1d4f6f78
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1619451
Commit-Queue: François Degros <fdegros@chromium.org>
Commit-Queue: Luciano Pacheco <lucmult@chromium.org>
Auto-Submit: François Degros <fdegros@chromium.org>
Reviewed-by: Luciano Pacheco <lucmult@chromium.org>
Cr-Commit-Position: refs/heads/master@{#661278}
3 files changed