Bug-1612390-Sidebars-included-in-extension.getViews-when-windowId-specified (#12246)
Bug-1612390-Sidebars-included-in-extension.getViews-when-windowId-specified (#12246)

Added line for `windowId` with note on matching sidebars and Firefox for Android support
mdn/browser-compat-data,chrisdavidmills/browser-compat-data,mdn/browser-compat-data,chrisdavidmills/browser-compat-data