src/vs/workbench/contrib/search/common/searchModel.ts/FileMatch/updateHighlights
class FileMatch:	updateHighlights(): void {
		if (!this._model) {
			return;
		}

		this._model.changeDecorations((accessor) => {
			const newDecorations = (
				this.parent().showHighlights
					? this.matches().map(match => <IModelDeltaDecoration>{
						range: match.range(),
						options: FileMatch.getDecorationOption(this.isMatchSelected(match))
					})
					: []
			);
			this._modelDecorations = accessor.deltaDecorations(this._modelDecorations, newDecorations);
		});
	}