Instrument "Remove this person" in user manager.

chrome/browser/profiles/profile_metrics.h

 // Copyright (c) 2012 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.
 
 #ifndef CHROME_BROWSER_PROFILES_PROFILE_METRICS_H_
 #define CHROME_BROWSER_PROFILES_PROFILE_METRICS_H_
 
 #include <stddef.h>
 #include <string>
 
@@ skipping 30 matching lines @@
   enum ProfileAdd {
     ADD_NEW_USER_ICON = 0,      // User adds new user from icon menu
     ADD_NEW_USER_MENU,          // User adds new user from menu bar
     ADD_NEW_USER_DIALOG,        // User adds new user from create-profile dialog
     ADD_NEW_USER_MANAGER,       // User adds new user from User Manager
     ADD_NEW_USER_LAST_DELETED,  // Auto-created after deleting last user
     NUM_PROFILE_ADD_METRICS
   };
 
   enum ProfileDelete {
-    DELETE_PROFILE_SETTINGS = 0,  // Delete profile from settings page.
-    DELETE_PROFILE_USER_MANAGER,  // Delete profile from User Manager.
+    // Delete profile from settings page.
+    DELETE_PROFILE_SETTINGS = 0,
+    // Delete profile from User Manager.
+    DELETE_PROFILE_USER_MANAGER,
+    // Show the delete profile warning in the user manager.

[noms (inactive), 2015/03/18 21:20:48]

nit: User Manager (title caps)

[anthonyvd, 2015/03/18 21:56:56]

Done.

+    DELETE_PROFILE_USER_MANAGER_SHOW_WARNING,
     NUM_DELETE_PROFILE_METRICS
   };
 
   // Enum for counting the ways user profiles and menus were opened.
   enum ProfileOpen {
     NTP_AVATAR_BUBBLE = 0,    // User opens avatar menu from NTP
     ICON_AVATAR_BUBBLE,       // User opens the avatar menu from button
     SWITCH_PROFILE_ICON,      // User switches profiles from icon menu
     SWITCH_PROFILE_MENU,      // User switches profiles from menu bar
     SWITCH_PROFILE_DOCK,      // User switches profiles from dock (Mac-only)
@@ skipping 172 matching lines @@
 
   // These functions should only be called on the UI thread because they hook
   // into g_browser_process through a helper function.
   static void LogProfileLaunch(Profile* profile);
   static void LogProfileSyncSignIn(const base::FilePath& profile_path);
   static void LogProfileUpdate(const base::FilePath& profile_path);
 };
 
 
 #endif  // CHROME_BROWSER_PROFILES_PROFILE_METRICS_H_