src/vs/workbench/browser/parts/editor/tabsTitleControl.ts/TabsTitleControl/updateEditorDirty
class TabsTitleControl:	updateEditorDirty(editor: IEditorInput): void {
		this.withTab(editor, (editor, index, tabContainer, tabLabelWidget, tabLabel, tabActionBar) => this.redrawTabActiveAndDirty(this.accessor.activeGroup === this.group, editor, tabContainer, tabActionBar));
	}