GitLab

QuotaManager will move behind a mojo interface. This interface's methods
must all be async, in order to avoid deadlock (storage service ->
browser access may be synch, so browser -> storage service access must
be async). In preparation for this change, only the quota system may
access QuotaManager directly. All other features will use
QuotaManagerProxy, which will only expose async methods.

This CL applies the plan to PepperFileSystemBrowserHost.

Bug: 1168597
Change-Id: I227b0ee9aad87b59a569f469370be4d0903280cb
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2645492Reviewed-by: Bill Budge <bbudge@chromium.org>
Commit-Queue: Victor Costan <pwnall@chromium.org>
Cr-Commit-Position: refs/heads/master@{#846429}