Convert WindowOpenDisposition to an enum class.

chrome/browser/ui/views/profiles/profile_chooser_view.cc

Index: chrome/browser/ui/views/profiles/profile_chooser_view.cc
diff --git a/chrome/browser/ui/views/profiles/profile_chooser_view.cc b/chrome/browser/ui/views/profiles/profile_chooser_view.cc
index 50f4325e74b7b74ea6297977c168f1f19cd11f03..cd0b63b05bbd4ab0ac4d9546d3e02834d1afeb51 100644
--- a/chrome/browser/ui/views/profiles/profile_chooser_view.cc
+++ b/chrome/browser/ui/views/profiles/profile_chooser_view.cc
@@ -1101,8 +1101,8 @@ void ProfileChooserView::ButtonPressed(views::Button* sender,
         open_other_profile_indexes_map_.find(sender);
     if (profile_match != open_other_profile_indexes_map_.end()) {
       avatar_menu_->SwitchToProfile(
-          profile_match->second,
-          ui::DispositionFromEventFlags(event.flags()) == NEW_WINDOW,
+          profile_match->second, ui::DispositionFromEventFlags(event.flags()) ==
+                                     WindowOpenDisposition::NEW_WINDOW,
           ProfileMetrics::SWITCH_PROFILE_ICON);
     } else {
       // This was a profile accounts button.