Revert of Abstract //content-level dependencies out of InMemoryURLIndex (patchset #5 id:100001 of https://codereview.chromium.org/
1186103002/)
Reason for revert:
Speculative revert to fix the Windows unit_test failures.
Original issue's description:
> Abstract //content-level dependencies out of InMemoryURLIndex
>
> It now takes a base::SequencedWorkerPool and a set of client schemes to
> whitelist in its constructor.
>
> BUG=371538
>
> TBR=phajdan.jr
>
> Committed: https://crrev.com/
a6da40f8abbf44f8dab8db59a425b85c1db44376
> Cr-Commit-Position: refs/heads/master@{#334799}
TBR=pkasting@chromium.org,phajdan.jr@chromium.org,blundell@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=371538
Review URL: https://codereview.chromium.org/
1184923006
Cr-Commit-Position: refs/heads/master@{#334866}