Comment 7 for bug 356317

Would you need to split on hardware ID? It seems the code makes these changes based on an if statement on whether or not it has an integrated button. That should just trigger false on the MBP4,1 I'd assume. If that's the case then even the other functionality I mentioned could be added based on the same IF statement.

Apple def has special rules for that bottom quarter of the touchpad to literally mimic the button on the 4,1.