root/chrome/browser/ui/app_modal_dialogs/

[..]
  1. app_modal_dialog.cc
  2. app_modal_dialog.h
  3. app_modal_dialog_queue.cc
  4. app_modal_dialog_queue.h
  5. javascript_app_modal_dialog.cc
  6. javascript_app_modal_dialog.h
  7. javascript_dialog_manager.cc
  8. javascript_dialog_manager.h
  9. native_app_modal_dialog.h
[..]