Moved SigninManager out of browser/sync, and start changing the code so signin
does not require going through ProfileSyncService.

BUG=108017
TEST=test signin scenarios
TBR=mnissler

Review URL: http://codereview.chromium.org/8996002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@117130 0039d316-1c4b-4281-b951-d872f2087c98
57 files changed