Revert of [Android] Move remounting of external storage to after reboot. (patchset #1 id:1 of https://codereview.chromium.org/1373263002/ )
Revert of [Android] Move remounting of external storage to after reboot. (patchset #1 id:1 of https://codereview.chromium.org/1373263002/ )

Reason for revert:
Not working properly.

Original issue's description:
> [Android] Move remounting of external storage to after reboot.
>
> BUG=537146
>
> Committed: https://crrev.com/5795399eb899419e3164c9e845b12879f84b21d6
> Cr-Commit-Position: refs/heads/master@{#351318}

TBR=jbudorick@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=537146

Review URL: https://codereview.chromium.org/1376883003

Cr-Commit-Position: 972c6d2dc6dd5efdad1377c0d224e03eb8f276f7@{#351379}

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