Revert 254678 "sync: turn on deferred startup."

> sync: turn on deferred startup.
> 
> BUG=80194
> R=rlarocque@chromium.org
> 
> Review URL: https://codereview.chromium.org/184103008

TBR=tim@chromium.org

Review URL: https://codereview.chromium.org/186883006

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@254812 0039d316-1c4b-4281-b951-d872f2087c98
Have Autofill webdata tests be run as part of components_unittests

These tests needed only very minor changes to be moved from being run in
unit_tests to being run in components_unittests.

BUG=303083

Review URL: https://codereview.chromium.org/180803007

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@254813 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 254813
Fix LoginDatabaseTest.Logins on iOS

OS_MACOSX is also defined on iOS, but in this case the condition is
incorrect (passwords are stored in the login database).

BUG=295664

Review URL: https://codereview.chromium.org/186663003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@254814 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 254814