Instrument "Remove this person" in user manager.

chrome/browser/ui/webui/chromeos/login/signin_screen_handler.cc

Index: chrome/browser/ui/webui/chromeos/login/signin_screen_handler.cc
diff --git a/chrome/browser/ui/webui/chromeos/login/signin_screen_handler.cc b/chrome/browser/ui/webui/chromeos/login/signin_screen_handler.cc
index 0caf2cb8e2b3e6b2b9a494c89912e22ee7f07352..3d721d236303ef99529f02d470da0b05633be570 100644
--- a/chrome/browser/ui/webui/chromeos/login/signin_screen_handler.cc
+++ b/chrome/browser/ui/webui/chromeos/login/signin_screen_handler.cc
@@ -47,6 +47,7 @@
 #include "chrome/browser/chromeos/settings/cros_settings.h"
 #include "chrome/browser/io_thread.h"
 #include "chrome/browser/profiles/profile.h"
+#include "chrome/browser/profiles/profile_metrics.h"
 #include "chrome/browser/signin/easy_unlock_service.h"
 #include "chrome/browser/ui/webui/chromeos/login/error_screen_handler.h"
 #include "chrome/browser/ui/webui/chromeos/login/gaia_screen_handler.h"
@@ -491,6 +492,8 @@ void SigninScreenHandler::RegisterMessages() {
               &SigninScreenHandler::HandleCancelConsumerManagementEnrollment);
   AddCallback("getTouchViewState",
               &SigninScreenHandler::HandleGetTouchViewState);
+  AddCallback("logRemoveUserWarningShown",
+              &SigninScreenHandler::HandleLogRemoveUserWarningShown);
 
   // This message is sent by the kiosk app menu, but is handled here
   // so we can tell the delegate to launch the app.
@@ -1271,6 +1274,11 @@ void SigninScreenHandler::HandleGetTouchViewState() {
   }
 }
 
+void SigninScreenHandler::HandleLogRemoveUserWarningShown() {
+  ProfileMetrics::LogProfileDeleteUser(
+      ProfileMetrics::DELETE_PROFILE_USER_MANAGER_SHOW_WARNING);
+}
+
 bool SigninScreenHandler::AllWhitelistedUsersPresent() {
   CrosSettings* cros_settings = CrosSettings::Get();
   bool allow_new_user = false;