script: Add longdesc reflection to HTMLIFrameElement and
HTMLFrameElement
Also corrects the reflection for HTMLImageElement to use USVString.
Testing: Covered by WPTs
Signed-off-by: Luke Warlow <lwarlow@igalia.com>
Add the reflected 'sizes' IDL attribute for <image> element's DOM
interface which defines image sizes for different page layouts.
See https://html.spec.whatwg.org/multipage/#dom-img-sizes
Testing: Improvements in the following tests
- custom-elements/reactions/customized-builtins/HTMLImageElement.html
- html/dom/idlharness.https.html
-
html/semantics/embedded-content/the-img-element/relevant-mutations.html
Signed-off-by: Andrei Volykhin <andrei.volykhin@gmail.com>