| Index: src/types.h | 
| diff --git a/src/types.h b/src/types.h | 
| index 3fb59277b0aadcbfbd937d90e7fe53a67c46aeff..5ca3a81452c2fa3a10b789f3ed71b07630d96a75 100644 | 
| --- a/src/types.h | 
| +++ b/src/types.h | 
| @@ -321,6 +321,8 @@ class TypeImpl : public Config::Base { | 
| inline bool NowContains(i::Object* val); | 
| bool NowContains(i::Handle<i::Object> val) { return this->NowContains(*val); } | 
|  | 
| +  bool NowStable(); | 
| + | 
| bool IsClass() { return Config::is_class(this); } | 
| bool IsConstant() { return Config::is_constant(this); } | 
| bool IsArray() { return Config::is_struct(this, StructuralType::kArrayTag); } | 
|  |