src/vs/workbench/contrib/debug/browser/replFilter.ts/ReplFilterActionViewItem/constructor
class ReplFilterActionViewItem:	constructor(
		action: IAction,
		private placeholder: string,
		private filters: ReplFilterState,
		private history: string[],
		private showHistoryHint: () => boolean,
		@IInstantiationService private readonly instantiationService: IInstantiationService,
		@IThemeService private readonly themeService: IThemeService,
		@IContextViewService private readonly contextViewService: IContextViewService) {
		super(null, action);
		this.delayedFilterUpdate = new Delayer<void>(400);
		this._register(toDisposable(() => this.delayedFilterUpdate.cancel()));
	}