[Mac/multiprofile] "Customize User..." should edit the currently active profile

chrome/browser/profiles/avatar_menu_model.h

Index: chrome/browser/profiles/avatar_menu_model.h
diff --git a/chrome/browser/profiles/avatar_menu_model.h b/chrome/browser/profiles/avatar_menu_model.h
index 24158019b5d0e3a13cccbb45d9c20823611e8f64..cf2fb43a693065b9e37f8d5ad11b5d53e3dd2412 100644
--- a/chrome/browser/profiles/avatar_menu_model.h
+++ b/chrome/browser/profiles/avatar_menu_model.h
@@ -69,6 +69,9 @@ class AvatarMenuModel : public NotificationObserver {
   // Gets the number of profiles.
   size_t GetNumberOfItems();
 
+  // Returns the index of the active profile.
+  size_t GetActiveProfileIndex();
+
   // Gets the an Item at a specified index.
   const Item& GetItemAt(size_t index);