Change CHECK(dex_cache != NULL) to use DCHECK
Change CHECK(dex_cache != NULL) to use DCHECK

Change-Id: If10b8748eff68f4b57c6ae6ecf4b18be4b4546b5

treadstoneproject/artinst,treadstoneproject/artinst,treadstoneproject/artinst,treadstoneproject/artinst,treadstoneproject/artinst