profman: Change the default new min methods/classes percent change
for compilation to 20%.

Cherry-pick from 3d312ee3ba7a25e55bf8961a30331c9cf468b95d

Bug: 172490638
Test: run art_profman_tests
Change-Id: I771c8b99867fd11161ba3bdf5a2e3fa337abafa8
Merged-In: I771c8b99867fd11161ba3bdf5a2e3fa337abafa8
3 files changed