Update the string for gaia incognito header

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 293 matching lines @@
   // to refactor.
   switch (gaia_service) {
     case signin::GAIA_SERVICE_TYPE_NONE:
       UMA_HISTOGRAM_ENUMERATION("Profile.DesktopMenu.NonGAIA", metric,
                                 NUM_PROFILE_DESKTOP_MENU_METRICS);
       break;
     case signin::GAIA_SERVICE_TYPE_SIGNOUT:
       UMA_HISTOGRAM_ENUMERATION("Profile.DesktopMenu.GAIASignout", metric,
                                 NUM_PROFILE_DESKTOP_MENU_METRICS);
       break;
-    case signin::GAIA_SERVICE_TYPE_SIGNOUTOPTIONS_INCOGNITO:
-      UMA_HISTOGRAM_ENUMERATION("Profile.DesktopMenu.GAIASignoutIncognito",
+    case signin::GAIA_SERVICE_TYPE_INCOGNITO:
+      UMA_HISTOGRAM_ENUMERATION("Profile.DesktopMenu.GAIAIncognito",
                                 metric, NUM_PROFILE_DESKTOP_MENU_METRICS);
       break;
     case signin::GAIA_SERVICE_TYPE_ADDSESSION:
       UMA_HISTOGRAM_ENUMERATION("Profile.DesktopMenu.GAIAAddSession", metric,
                                 NUM_PROFILE_DESKTOP_MENU_METRICS);
       break;
     case signin::GAIA_SERVICE_TYPE_REAUTH:
       UMA_HISTOGRAM_ENUMERATION("Profile.DesktopMenu.GAIAReAuth", metric,
                                 NUM_PROFILE_DESKTOP_MENU_METRICS);
       break;
@@ skipping 20 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);
 }