ProfilingInfo roots should be visited by the declaring class.

There seems to be an implicit assumption that only classes can
visit native roots (ie kVisitNativeRoots in Class::VisitReferences).
However, some places like Dbg::VisitRoots and
AllocRecordObjectMap::VisitRoots visit ArtMethod::VisitRoot
directly, and that breaks the assumptions.

bug:27435111
Change-Id: I5b476e614ba820394635d946cb562bf872a50e7e
2 files changed