Call RecordWriteIntoCode in RelocInfo::set_target_cell.

src/mips/assembler-mips-inl.h

Index: src/mips/assembler-mips-inl.h
diff --git a/src/mips/assembler-mips-inl.h b/src/mips/assembler-mips-inl.h
index 27ec8e5bda9b40fccec4f9218264edea38085927..0a875bbc8fb88e35f10257fddb40d5b9c5ce57d8 100644
--- a/src/mips/assembler-mips-inl.h
+++ b/src/mips/assembler-mips-inl.h
@@ -284,10 +284,8 @@ void RelocInfo::set_target_cell(Cell* cell,
   Address address = cell->address() + Cell::kValueOffset;
   Memory::Address_at(pc_) = address;
   if (write_barrier_mode == UPDATE_WRITE_BARRIER && host() != NULL) {
-    // TODO(1550) We are passing NULL as a slot because cell can never be on
-    // evacuation candidate.
-    host()->GetHeap()->incremental_marking()->RecordWrite(
-        host(), NULL, cell);
+    host()->GetHeap()->incremental_marking()->RecordWriteIntoCode(host(), this,
+                                                                  cell);
   }
 }