GitLab

Move the few strings and one message handler into SyncSetupHandler, where
the rest of the UI lives.

BUG=none
TEST=none
R=csilv


Review URL: http://codereview.chromium.org/10211010

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@133965 0039d316-1c4b-4281-b951-d872f2087c98