src/vs/workbench/browser/parts/editor/editorGroupView.ts/EditorGroupView/onDidChangeEditorLabel
class EditorGroupView:	private onDidChangeEditorLabel(editor: EditorInput): void {

		// Forward to title control
		this.titleAreaControl.updateEditorLabel(editor);

		// Event
		this._onDidGroupChange.fire({ kind: GroupChangeKind.EDITOR_LABEL, editor });
	}