r82780 added support for a new eventSender.scalePageBy function to DRT/mac. We should implement this on Windows, too, so that we can run the tests that require it!
Another test that requires this feature:
I suggest we move scalePageBy to window.internal.
(In reply to comment #2)
> I suggest we move scalePageBy to window.internal.
Looks like this was done!
*** This bug has been marked as a duplicate of bug 64512 ***