Create a dialog that warns about possible UI-oddities of the multi-profiles window teleport

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 4b59827516630072b0d695f8ce3b940e8b1fed1b..bc54386a2af377369ec791ebd8747391d36533e9 100644
--- a/chrome/common/pref_names.cc
+++ b/chrome/common/pref_names.cc
@@ -864,6 +864,11 @@ const char kMultiProfileNeverShowIntro[] =
     "settings.multi_profile_never_show_intro";
 
 // A boolean pref recording whether user has dismissed the multiprofile
+// teleport warning dialog show.
+const char kMultiProfileWarningShowDismissed[] =
+    "settings.multi_profile_warning_show_dismissed";
+
+// A boolean pref recording whether user has dismissed the multiprofile
 // notification.
 const char kMultiProfileNotificationDismissed[] =
     "settings.multi_profile_notification_dismissed";