Add read barrier option to UpdateEntrypoints

Also call this without read barrier for image relocation.

Bug: 26786304
Change-Id: Ia718c1491b54cadb7283c62afc1eb9031a15b4ef
diff --git a/runtime/fault_handler.cc b/runtime/fault_handler.cc
index 5345b89..5c5abeb 100644
--- a/runtime/fault_handler.cc
+++ b/runtime/fault_handler.cc
@@ -349,7 +349,7 @@
   // Check that the class pointer inside the object is not null and is aligned.
   // TODO: Method might be not a heap address, and GetClass could fault.
   // No read barrier because method_obj may not be a real object.
-  mirror::Class* cls = method_obj->GetDeclaringClassNoBarrier();
+  mirror::Class* cls = method_obj->GetDeclaringClassUnchecked<kWithoutReadBarrier>();
   if (cls == nullptr) {
     VLOG(signals) << "not a class";
     return false;