fix(api.Node.getRootNode): fix IE/Edge compat (#1833)
fix(api.Node.getRootNode): fix IE/Edge compat (#1833)


chrisdavidmills/browser-compat-data,teoli2003/browser-compat-data,chrisdavidmills/browser-compat-data,mdn/browser-compat-data,mdn/browser-compat-data