[builtins] implement JSBuiltinReducer for ArrayIteratorNext()

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 66a6d058a3b075471f3ebc3cd1b137346788632e..5931e0eb03a5d4789b0977a1a75ed8390b863034 100644
--- a/src/code-stub-assembler.h
+++ b/src/code-stub-assembler.h
@@ -20,8 +20,6 @@ class StubCache;
 
 enum class PrimitiveType { kBoolean, kNumber, kString, kSymbol };
 
-enum class IterationKind { kKeys, kValues, kEntries };
-
 #define HEAP_CONSTANT_LIST(V)                 \
   V(BooleanMap, BooleanMap)                   \
   V(empty_string, EmptyString)                \
@@ -340,6 +338,10 @@ class V8_EXPORT_PRIVATE CodeStubAssembler : public compiler::CodeAssembler {
                                       compiler::Node* value);
   compiler::Node* LoadNativeContext(compiler::Node* context);
 
+  compiler::Node* IsInAnyNativeContext(compiler::Node* object, uint32_t index);
+  compiler::Node* IsAnyInitialArrayPrototype(compiler::Node* object);
+  compiler::Node* IsAnyInitialObjectPrototype(compiler::Node* object);
+
   compiler::Node* LoadJSArrayElementsMap(ElementsKind kind,
                                          compiler::Node* native_context);