UMA Metrics to track profile deletion, along with signed-in status.

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 78519acc839dc21a7aa5346248bde389e7d43380..426176a71db3ecf34335860f3d6a04866bc3fda4 100644
--- a/tools/metrics/histograms/histograms.xml
+++ b/tools/metrics/histograms/histograms.xml
@@ -22439,6 +22439,17 @@ Therefore, the affected-histogram name has to have at least one dot in it.
   </summary>
 </histogram>
 
+<histogram name="Profile.Delete" units="Boolean">

[Alexei Svitkine (slow), 2014/06/19 19:20:13]

Add a BooleanSignedIn enum, so the meaning of this histogram is clear on the
dashboard.

[Mike Lerman, 2014/06/19 19:31:19]

Done.

+  <owner>mlerman@chromium.org</owner>
+  <summary>
+    The user used the settings page to delete a profile. Please note this
+    histogram tracks the user interaction, and not the actual delete of the
+    profile, which can happen much later. The parameter indicates if the profile
+    was signed in or not; true means the profile was signed in, false means the
+    profile was not signed in.
+  </summary>
+</histogram>
+
 <histogram name="Profile.DesktopMenu" enum="ProfileDesktopMenu">
   <owner>mlerman@chromium.org</owner>
   <summary>