[KeyedLoadIC] Support Smi "handlers" for simple field loads

src/code-stub-assembler.h

Index: src/code-stub-assembler.h
diff --git a/src/code-stub-assembler.h b/src/code-stub-assembler.h
index 87d69f37a2395c7007bda765e39adad91e4a2b63..0421f4ee06a6db2e0285be3300a4066e668d2fc2 100644
--- a/src/code-stub-assembler.h
+++ b/src/code-stub-assembler.h
@@ -449,6 +449,8 @@ class CodeStubAssembler : public compiler::CodeAssembler {
                              Variable* var_handler, Label* if_miss,
                              int unroll_count);
 
+  void HaveLoadICHandler(const LoadICParameters* p, compiler::Node* handler);
+
   compiler::Node* StubCachePrimaryOffset(compiler::Node* name,
                                          compiler::Node* map);