Track adding a new user automatically.

chrome/browser/profiles/profile_manager.cc

Index: chrome/browser/profiles/profile_manager.cc
diff --git a/chrome/browser/profiles/profile_manager.cc b/chrome/browser/profiles/profile_manager.cc
index d5224aa2e79cb871eb6fd8c6107980770c7a7fc3..3dba778821e8415f7f41ed5ce09dd6e52223b168 100644
--- a/chrome/browser/profiles/profile_manager.cc
+++ b/chrome/browser/profiles/profile_manager.cc
@@ -675,6 +675,9 @@ void ProfileManager::ScheduleProfileForDeletion(
                          new_profile_name,
                          new_avatar_url,
                          std::string());
+
+      ProfileMetrics::LogProfileAddNewUser(
+          ProfileMetrics::ADD_NEW_USER_LAST_DELETED);
     } else {
       // On the Mac, the browser process is not killed when all browser windows
       // are closed, so just in case we are deleting the active profile, and no