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 f5ed0cbdad6232c4c67ce825a6ef05710527344f..34341c26a197fe4f2daefd651ee49ca738885a19 100644
--- a/chrome/common/pref_names.cc
+++ b/chrome/common/pref_names.cc
@@ -851,6 +851,11 @@ 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 kMultiProfileIntroShowDismissed[] =
+    "settings.multi_profile_intro_show_dismissed";
+
+// A boolean pref recording whether user has dismissed the multiprofile
 // notification.
 const char kMultiProfileNotificationDismissed[] =
     "settings.multi_profile_notification_dismissed";