PDF bounding boxes are wrong in WebKit because 1) there's no way for PDF objects to get the primary screen height 2) the PDFPluginAXObject's position is not being converted correctly <rdar://75368260>
Created attachment 423078 [details] patch
Committed r274377: <https://commits.webkit.org/r274377> All reviewed patches have been landed. Closing bug and clearing flags on attachment 423078 [details].