Revert of Refactoring : Move AuthAttempt and Authenticators to chromeos/login (https...

Revert of Refactoring : Move AuthAttempt and Authenticators to chromeos/login (https://codereview.chromium.org/391373002/)

Reason for revert:
I'm afraid the BrowserThread layering violations in this patch actually cause compile failures on:

http://build.chromium.org/p/chromium.webkit/builders/Linux%20ChromiumOS%20Tests%20%28dbg%29%281%29/builds/372

http://build.chromium.org/p/chromium.webkit/builders/Linux%20ChromiumOS%20Tests%20%28dbg%29%283%29/builds/364

Original issue's description:
> Refactoring : Move AuthAttempt and Authenticators to chromeos/login
> Extracted LoginEventRecorder from BootTimesLoader to loose dependecies.
>
> BUG=387613
> R=nkostylev@chromium.org
> TBR=bauerb@chromium.org
> TBR=stevenjb@chromium.org
>
> Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=284682

TBR=bauerb@chromium.org,nkostylev@chromium.org,stevenjb@chromium.org,antrim@chromium.org
NOTREECHECKS=true
NOTRY=true
BUG=387613

Review URL: https://codereview.chromium.org/413473003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@284720 0039d316-1c4b-4281-b951-d872f2087c98