Make 624-checker-stringops less Dexer-sensitive.

Rewrite Dexer-sensitive tests from 624-checker-stringops using Smali

Bug: 65168732
Test: art/test/run-test ... 624-checker-stringops
Change-Id: Ia808f9237a6386a3a45a65245d902eb3f19c65f0
3 files changed