request_preview_dialog_observer  114 chrome/browser/printing/print_preview_dialog_controller_browsertest.cc     request_preview_dialog_observer()->set_quit_closure(run_loop.QuitClosure());
request_preview_dialog_observer  156 chrome/browser/printing/print_preview_dialog_controller_browsertest.cc     return cloned_tab_observer_->request_preview_dialog_observer();