Inline functions to speedup GetElement

src/objects-inl.h

Index: src/objects-inl.h
diff --git a/src/objects-inl.h b/src/objects-inl.h
index a217f0032b62ede6484018b07a6f0582cb634e74..16cd9620eee87383c13f1874b7ab8180dc8f06c0 100644
--- a/src/objects-inl.h
+++ b/src/objects-inl.h
@@ -1995,6 +1995,16 @@ void JSObject::initialize_elements() {
 }
 
 
+InterceptorInfo* JSObject::GetIndexedInterceptor() {
+  DCHECK(map()->has_indexed_interceptor());
+  JSFunction* constructor = JSFunction::cast(map()->GetConstructor());
+  DCHECK(constructor->shared()->IsApiFunction());
+  Object* result =
+      constructor->shared()->get_api_func_data()->indexed_property_handler();
+  return InterceptorInfo::cast(result);
+}
+
+
 ACCESSORS(Oddball, to_string, String, kToStringOffset)
 ACCESSORS(Oddball, to_number, Object, kToNumberOffset)
 ACCESSORS(Oddball, type_of, String, kTypeOfOffset)