src/vs/workbench/contrib/webview/browser/webviewFindWidget.ts/WebviewFindWidget/constructor
class WebviewFindWidget:	constructor(
		private readonly _delegate: WebviewFindDelegate,
		@IContextViewService contextViewService: IContextViewService,
		@IContextKeyService contextKeyService: IContextKeyService,
		@IKeybindingService keybindingService: IKeybindingService
	) {
		super(undefined, { showOptionButtons: false, checkImeCompletionState: _delegate.checkImeCompletionState }, contextViewService, contextKeyService, keybindingService);
		this._findWidgetFocused = KEYBINDING_CONTEXT_WEBVIEW_FIND_WIDGET_FOCUSED.bindTo(contextKeyService);

		this._register(_delegate.hasFindResult(hasResult => {
			this.updateButtons(hasResult);
			this.focusFindBox();
		}));

		this._register(_delegate.onDidStopFind(() => {
			this.updateButtons(false);
		}));
	}