Add XHR API types

Author: garyb

src/DOM/XHR.purs

@@ -0,0 +1,11 @@
+-- | Types for the [WHATWG XMLHttpRequest Living Standard](https://xhr.spec.whatwg.org/#interface-formdata).
+module DOM.XHR where
+
+-- | An `XMLHttpRequest` object instance.
+foreign import data XMLHttpRequest :: *
+
+-- | A `FormData` object instance.
+foreign import data FormData :: *
+
+-- | A `ProgressEvent` object instance.
+foreign import data ProgressEvent :: *