CopyAddDescriptor 1572 src/objects.cc MaybeObject* maybe_new_map = map()->CopyAddDescriptor(&new_field, flag); CopyAddDescriptor 1609 src/objects.cc MaybeObject* maybe_new_map = map()->CopyAddDescriptor(&d, flag); CopyAddDescriptor 4927 src/objects.h MUST_USE_RESULT MaybeObject* CopyAddDescriptor(Descriptor* descriptor,