Created optional multiprofiles introduction dialog.

chrome/common/pref_names.cc

Index: chrome/common/pref_names.cc
diff --git a/chrome/common/pref_names.cc b/chrome/common/pref_names.cc
index 0b8cace3896e5d93741d62cf43363eb8a5477bd0..14e4fd46bd8d37706bec1bf098177be454264817 100644
--- a/chrome/common/pref_names.cc
+++ b/chrome/common/pref_names.cc
@@ -856,6 +856,11 @@ const char kOpenNetworkConfiguration[] = "onc";
 const char kRAConsentFirstTime[] = "settings.privacy.ra_consent";
 
 // A boolean pref recording whether user has dismissed the multiprofile
+// itroduction dialog show.
+const char kMultiProfileNeverShowIntro[] =
+    "settings.multi_profile_never_show_intro";
+
+// A boolean pref recording whether user has dismissed the multiprofile
 // notification.
 const char kMultiProfileNotificationDismissed[] =
     "settings.multi_profile_notification_dismissed";