Revert "Turn off cross-dex inlining while we take a look at 207329152"

This reverts commit f6bb80661e2a4f2940fc899dd1474aa457e1b45a.

Reason for revert: Found fix. We were using method instead of
outer_method to get the oat_dex_files vector. Fix can be seen between
patchsets 2 and 3.

Bug: 154012332, 206513969, 206992606
Change-Id: I0a1b3a3c6e9670400afe6e673e5a6ddc510fd1a4
9 files changed