Don't allow SUPPORTED_ABIs to be set by the native bridge.

SUPPORTED_ABIs is a prioritized list of all ABIs a device
support, and must not vary depending on whether or not an app
is emulated.

bug: 18061712

(cherry picked from commit 66f0d93c)

Change-Id: I99cea3a56228dac43ae310c295881881e5a77c31