Add histograms definitions for windows enterprise checks.

BUG=none
TEST=none

Review URL: https://codereview.chromium.org/99783011

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@242179 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 242179