Add HasProperty code stub that tries simple lookups or jumps to runtime otherwise.

src/code-stubs.h

Index: src/code-stubs.h
diff --git a/src/code-stubs.h b/src/code-stubs.h
index 07ae6af1c87c934996ffdf78f89fad3efddbaad3..57da9c3024deb54a652a3882cd569d17408a7c70 100644
--- a/src/code-stubs.h
+++ b/src/code-stubs.h
@@ -139,6 +139,7 @@ namespace internal {
   V(ToBoolean)                              \
   V(ToInteger)                              \
   V(ToLength)                               \
+  V(HasProperty)                            \
   /* IC Handler stubs */                    \
   V(ArrayBufferViewLoadField)               \
   V(LoadConstant)                           \
@@ -931,6 +932,15 @@ class LoadIndexedInterceptorStub : public TurboFanCodeStub {
   DEFINE_TURBOFAN_CODE_STUB(LoadIndexedInterceptor, TurboFanCodeStub);
 };
 
+// ES6 section 12.10.3 "in" operator evaluation.
+class HasPropertyStub : public TurboFanCodeStub {
+ public:
+  explicit HasPropertyStub(Isolate* isolate) : TurboFanCodeStub(isolate) {}
+
+  DEFINE_CALL_INTERFACE_DESCRIPTOR(HasProperty);
+  DEFINE_TURBOFAN_CODE_STUB(HasProperty, TurboFanCodeStub);
+};
+
 enum StringAddFlags {
   // Omit both parameter checks.
   STRING_ADD_CHECK_NONE = 0,