[turbofan] Add support for CreateIterResultObject.

src/compiler/access-builder.h

Index: src/compiler/access-builder.h
diff --git a/src/compiler/access-builder.h b/src/compiler/access-builder.h
index 01fddc6ec4c70128df9d9eb36b8720107539a873..808f00f1d6d352156e11d08929732766aea28595 100644
--- a/src/compiler/access-builder.h
+++ b/src/compiler/access-builder.h
@@ -55,6 +55,12 @@ class AccessBuilder final : public AllStatic {
   // Provides access to JSDate fields.
   static FieldAccess ForJSDateField(JSDate::FieldIndex index);
 
+  // Provides access to JSIteratorResult::done() field.
+  static FieldAccess ForJSIteratorResultDone();
+
+  // Provides access to JSIteratorResult::value() field.
+  static FieldAccess ForJSIteratorResultValue();
+
   // Provides access to JSRegExp::flags() field.
   static FieldAccess ForJSRegExpFlags();