[DevTools] Recursively compute the bounding rect of the roots #34629
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…ok#34629) It's possible for the children to overflow the bounding rect of the root in general when they overflow in the DOM. However even when it doesn't overflow in the DOM, the bounding rect of the root can shrink while the content is suspended. In fact, it's very likely. Originally I thought we didn't need to consider this recursively because document scrolling takes absolute positioned content into account but because we're using nested overflow scrolling, we have to manually compute this.
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It's possible for the children to overflow the bounding rect of the root in general when they overflow in the DOM. However even when it doesn't overflow in the DOM, the bounding rect of the root can shrink while the content is suspended. In fact, it's very likely.
Originally I thought we didn't need to consider this recursively because document scrolling takes absolute positioned content into account but because we're using nested overflow scrolling, we have to manually compute this.