Migrate ManagedValueStoreCache off of BlockingPool.

R=rdevlin.cronin@chromium.org

Bug: 667892
Change-Id: I56f8529830ea5ec8e0684088448b99bc5b29a31d
Reviewed-on: https://chromium-review.googlesource.com/664300
Commit-Queue: Gabriel Charette <gab@chromium.org>
Reviewed-by: Devlin <rdevlin.cronin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#501619}
1 file changed