Revert of Wait until a new profile has been created before deleting the active profile.

Revert of Wait until a new profile has been created before deleting the active profile. (patchset #6 id:100001 of https://codereview.chromium.org/953453002/)

Reason for revert:
Suspected of causing flaky failure of ProfileManagerBrowserTests.DeleteSingletonProfile and ProfileManagerBrowserTests.DeletePasswords on Mac.

Examples:
https://build.chromium.org/p/chromium.mac/builders/Mac10.6%20Tests/builds/4785
https://build.chromium.org/p/chromium.mac/builders/Mac10.6%20Tests/builds/4789
https://build.chromium.org/p/chromium.mac/builders/Mac10.6%20Tests/builds/4790
http://build.chromium.org/p/chromium.mac/builders/Mac10.8%20Tests/builds/4858
http://build.chromium.org/p/chromium.mac/builders/Mac10.8%20Tests/builds/4859
http://build.chromium.org/p/chromium.mac/builders/Mac10.8%20Tests/builds/4860

Original issue's description:
> Wait until a new profile has been created before deleting the active profile.
>
> BUG=460859
>
> Committed: https://crrev.com/944361e0a8808cc0c82dcb0ef4e58440f5d1c0fa
> Cr-Commit-Position: refs/heads/master@{#318288}

TBR=noms@chromium.org,rsesek@chromium.org,bauerb@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=460859
Committed: https://crrev.com/ad6fc4c62819eda0b60bde00fe4fedd415a74fab
Cr-Commit-Position: refs/heads/master@{#318376}

[qyearsley, 2015-02-27 01:50:08]

Created Revert of Wait until a new profile has been created before deleting the
active profile.

[commit-bot: I haz the power, 2015-02-27 01:50:56]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/967453002/1

[commit-bot: I haz the power, 2015-02-27 01:51:52]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-02-27 01:52:49]

Patchset 1 (id:??) landed as
https://crrev.com/ad6fc4c62819eda0b60bde00fe4fedd415a74fab
Cr-Commit-Position: refs/heads/master@{#318376}