What steps will reproduce the problem?
(1) Setup Device Mode to a <100% scale
(2) Open a new tab and open Device Mode
(3) Navigate to a page with an OOPIF
(4) Try to 'Inspect element' anything in the iframe

What is the expected result?
Cursor position should align with visual position

What happens instead?
Cursor position ignores the scale factor defined by device mode.

Bisect:
https://chromium.googlesource.com/chromium/src/+log/51945ab84f62bf856b46809f4d3669eb3af4549a..2ce1e0340fa2c10cda3a4f499e1a13195399d0d2

Now that coordinate conversion for OOPIFs has changed, we likely just need to ensure that emulated scale factor is accounted for.
 

Deleted: iframeExample.html 235 bytes

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