Add benchmark for reflection performance on large classes.

The R.java file in this change is adapted from an autogenerated
frameworks class with android.* references stripped.

bug: 18211592

(cherry picked from commit f9362eeb6a8ec6411729a688d8050efffe8baa9d)

Change-Id: Ie627dd15e776425a1a7c0109bcf833872db46198
2 files changed