Serialization also calls inherited toJSON (w3c#1730)

Author: nechaev-chromium

index.html

@@ -6581,8 +6581,8 @@ <h3>Executing Script</h3>
     <li><p>Return <a>success</a> with data <var>reference</var>.
   </ol>
 
- <dt>has an <a>own property</a> named "<code>toJSON</code>" that is
-  a <a>Function</a>
+ <dt>has an <a>own property</a> or <a>inherited property</a> named
+    "<code>toJSON</code>" that is a <a>Function</a>
  <dd>Return <a>success</a> with the value returned by
   <a>Function.[[\Call]]</a>(<code>toJSON</code>) with <var>value</var>
   as the this value.
@@ -10979,6 +10979,7 @@ <h2>Index</h2>
    <!-- FunctionCreate --> <li><dfn><a href=https://tc39.github.io/ecma262/#sec-functioncreate>FunctionCreate</a></dfn>
    <!-- Get --> <li><dfn><a href=https://tc39.github.io/ecma262/#sec-get-o-p>Get</a></dfn>
    <!-- Global environment --> <li><dfn><a href=https://www.ecma-international.org/ecma-262/5.1/#sec-10.2.3>Global environment</a></dfn>
+   <!-- Inherited property --> <li><dfn data-lt="inherited properties"><a href=https://www.ecma-international.org/ecma-262/5.1/#sec-4.3.31>Inherited property</a></dfn>
    <!-- IsCallable --> <li><dfn><a href=https://tc39.github.io/ecma262/#sec-iscallable>IsCallable</a></dfn>
    <!-- Own property --> <li><dfn data-lt="own properties"><a href=https://www.ecma-international.org/ecma-262/5.1/#sec-4.3.30>Own property</a></dfn>
    <!-- Promise --> <li><dfn><a href=https://tc39.github.io/ecma262/#sec-promise-constructor>Promise</a></dfn>