How many rectangles were kept.
The popup's DPI divided by 96.
Scale applied to the rectangles, the devicePixelRatio of the popup's page.
Always true here; a failed call resolves with ApiFailure instead.
Optionalwarningregions truncated to 32 when more than 32 rectangles were given.
Id of the popup.
Successful response from
window.setClickThroughExcludeRegions.