2757472: Reland "Reland "[LSC] Remove base::string16 alias""

https://chromium-review.googlesource.com/c/chromium/src/+/2757472

shell/browser/ui/cocoa/electron_menu_controller.h

@@ -11,7 +11,6 @@
 #include "base/callback.h"
 #include "base/mac/scoped_nsobject.h"
 #include "base/memory/weak_ptr.h"
-#include "base/strings/string16.h"
 
 namespace electron {
 class ElectronMenuModel;