[heap] Reland "Verify remembered set for objects in the old generation."

src/heap/spaces.cc

Index: src/heap/spaces.cc
diff --git a/src/heap/spaces.cc b/src/heap/spaces.cc
index db8fb4b7d066bb67c6454827b3570cad811e77d7..8f75e14b788cac4e31459caed1cc58243f0280fd 100644
--- a/src/heap/spaces.cc
+++ b/src/heap/spaces.cc
@@ -1569,6 +1569,8 @@ void PagedSpace::Verify(ObjectVisitor* visitor) {
       // The object itself should look OK.
       object->ObjectVerify();
 
+      heap()->VerifyRememberedSetFor(object);
+
       // All the interior pointers should be contained in the heap.
       int size = object->Size();
       object->IterateBody(map->instance_type(), size, visitor);
@@ -3321,6 +3323,8 @@ void LargeObjectSpace::Verify() {
     // The object itself should look OK.
     object->ObjectVerify();
 
+    heap()->VerifyRememberedSetFor(object);
+
     // Byte arrays and strings don't have interior pointers.
     if (object->IsAbstractCode()) {
       VerifyPointersVisitor code_visitor;