Use the Windows MDM API to check if the machine is being managed.

tools/metrics/histograms/histograms.xml

Index: tools/metrics/histograms/histograms.xml
diff --git a/tools/metrics/histograms/histograms.xml b/tools/metrics/histograms/histograms.xml
index 0191421e4b958b9179ac332b3845e25fcb9c0c31..9f57e783ffed1abd8ce74334537f6f54d8079bed 100644
--- a/tools/metrics/histograms/histograms.xml
+++ b/tools/metrics/histograms/histograms.xml
@@ -14283,6 +14283,23 @@ http://cs/file:chrome/histograms.xml - but prefer this file for new entries.
   </summary>
 </histogram>
 
+<histogram name="EnterpriseCheck.IsEnterpriseUser" enum="BooleanEnabled">
+  <owner>rogerta@chromium.org</owner>
+  <summary>
+    Whether the machine is considered an enterprise user. An enterprise user is
+    either is a domain or is managed via MDM. This check is performed once at

[grt (UTC plus 2), 2017/02/10 12:12:26]

nit: "in a domain"?

[Roger Tawa OOO till Jul 10th, 2017/02/13 20:30:06]

Done.

+    start-up on Windows.
+  </summary>
+</histogram>
+
+<histogram name="EnterpriseCheck.IsManaged" enum="BooleanEnabled">
+  <owner>rogerta@chromium.org</owner>
+  <summary>
+    Whether the machine is managed via MDM. This check is performed once at
+    start-up on Windows.
+  </summary>
+</histogram>
+
 <histogram name="EnterpriseCheck.OSType" enum="OsSuite">
   <owner>mnissler@chromium.org</owner>
   <owner>pastarmovj@chromium.org</owner>