Fix typos in ProfileManager CHECK()s.

BUG=none
TBR=davemoore@chromium.org

Review URL: https://codereview.chromium.org/45643002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@231161 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 231161