Instrument "Remove this person" in user manager.

chrome/browser/profiles/profile_metrics.cc

 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/profiles/profile_metrics.h"
 
 #include "base/files/file_path.h"
 #include "base/logging.h"
 #include "base/metrics/histogram.h"
 #include "chrome/browser/browser_process.h"
@@ skipping 311 matching lines @@
       break;
   }
   UMA_HISTOGRAM_ENUMERATION("Profile.Avatar", icon_name,
                             NUM_PROFILE_AVATAR_METRICS);
 }
 
 void ProfileMetrics::LogProfileDeleteUser(ProfileDelete metric) {
   DCHECK(metric < NUM_DELETE_PROFILE_METRICS);
   UMA_HISTOGRAM_ENUMERATION("Profile.DeleteProfileAction", metric,
                             NUM_DELETE_PROFILE_METRICS);
-  UMA_HISTOGRAM_ENUMERATION("Profile.NetUserCount", PROFILE_DELETED,
-                            NUM_PROFILE_NET_METRICS);
+  if (metric != DELETE_PROFILE_USER_MANAGER_SHOW_WARNING) {
+    // If a user was actually deleted, update the net user count.
+    UMA_HISTOGRAM_ENUMERATION("Profile.NetUserCount", PROFILE_DELETED,
+                              NUM_PROFILE_NET_METRICS);
+  }
 }
 
 void ProfileMetrics::LogProfileOpenMethod(ProfileOpen metric) {
   DCHECK(metric < NUM_PROFILE_OPEN_METRICS);
   UMA_HISTOGRAM_ENUMERATION("Profile.OpenMethod", metric,
                             NUM_PROFILE_OPEN_METRICS);
 }
 
 void ProfileMetrics::LogProfileSwitch(
     ProfileOpen metric,
@@ skipping 184 matching lines @@
   UMA_HISTOGRAM_ENUMERATION("Profile.SyncSignIn",
                             GetProfileType(profile_path),
                             NUM_PROFILE_TYPE_METRICS);
 }
 
 void ProfileMetrics::LogProfileUpdate(const base::FilePath& profile_path) {
   UMA_HISTOGRAM_ENUMERATION("Profile.Update",
                             GetProfileType(profile_path),
                             NUM_PROFILE_TYPE_METRICS);
 }