Also allow hidden method access.

http://review.cyanogenmod.org/#/c/49689/ requires the chips library to
need access to hidden methods, so the calendar app needs access to those
too.

Change-Id: I288875ccd17bc39cea99b4d9ea3b247d4646d5dc
Merge branch 'jbam10' of github.com:BAM-Team/android_packages_apps_Calendar into jbam10