Revert of ES6 computed property names

src/ast.h

Index: src/ast.h
diff --git a/src/ast.h b/src/ast.h
index 8579ff4e331d6b103312bdd4320319f3f6fc4d18..43bde6ad25cc736bd89aab639ebb7398ccf6a947 100644
--- a/src/ast.h
+++ b/src/ast.h
@@ -1467,7 +1467,10 @@
     PROTOTYPE              // Property is __proto__.
   };
 
-  Expression* key() { return key_; }
+  ObjectLiteralProperty(Zone* zone, AstValueFactory* ast_value_factory,
+                        Literal* key, Expression* value, bool is_static);
+
+  Literal* key() { return key_; }
   Expression* value() { return value_; }
   Kind kind() { return kind_; }
 
@@ -1482,26 +1485,20 @@
   bool emit_store();
 
   bool is_static() const { return is_static_; }
-  bool is_computed_name() const { return is_computed_name_; }
 
  protected:
   friend class AstNodeFactory;
 
-  ObjectLiteralProperty(Zone* zone, AstValueFactory* ast_value_factory,
-                        Expression* key, Expression* value, bool is_static,
-                        bool is_computed_name);
-
-  ObjectLiteralProperty(Zone* zone, bool is_getter, Expression* key,
-                        FunctionLiteral* value, bool is_static,
-                        bool is_computed_name);
-
- private:
-  Expression* key_;
+  ObjectLiteralProperty(Zone* zone, bool is_getter, FunctionLiteral* value,
+                        bool is_static);
+  void set_key(Literal* key) { key_ = key; }
+
+ private:
+  Literal* key_;
   Expression* value_;
   Kind kind_;
   bool emit_store_;
   bool is_static_;
-  bool is_computed_name_;
   Handle<Map> receiver_type_;
 };
 
@@ -3380,21 +3377,20 @@
                                      boilerplate_properties, has_function, pos);
   }
 
-  ObjectLiteral::Property* NewObjectLiteralProperty(Expression* key,
+  ObjectLiteral::Property* NewObjectLiteralProperty(Literal* key,
                                                     Expression* value,
-                                                    bool is_static,
-                                                    bool is_computed_name) {
-    return new (zone_) ObjectLiteral::Property(
-        zone_, ast_value_factory_, key, value, is_static, is_computed_name);
+                                                    bool is_static) {
+    return new (zone_) ObjectLiteral::Property(zone_, ast_value_factory_, key,
+                                               value, is_static);
   }
 
   ObjectLiteral::Property* NewObjectLiteralProperty(bool is_getter,
-                                                    Expression* key,
                                                     FunctionLiteral* value,
-                                                    int pos, bool is_static,
-                                                    bool is_computed_name) {
-    return new (zone_) ObjectLiteral::Property(zone_, is_getter, key, value,
-                                               is_static, is_computed_name);
+                                                    int pos, bool is_static) {
+    ObjectLiteral::Property* prop =
+        new (zone_) ObjectLiteral::Property(zone_, is_getter, value, is_static);
+    prop->set_key(NewStringLiteral(value->raw_name(), pos));
+    return prop;
   }
 
   RegExpLiteral* NewRegExpLiteral(const AstRawString* pattern,