Gender neutral comments.

test/mjsunit/es6/proxies-for.js

 // Copyright 2011 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 133 matching lines @@
   assertEquals([], keys(o));
 })();
 
 (function testKeysProxyOnProto() {
   var handler = {ownKeys() { return ["0"]; }};
   var proxy = new Proxy({}, handler);
   var object = [0];
   object.__proto__ = proxy;
   assertEquals(["0"], keys(object));
 
-  // The Proxy doesn't set his ownKeys enumerable.
+  // The Proxy doesn't set its ownKeys enumerable.
   delete object[0];
   assertEquals([], keys(object));
 
   // The [[Has]] trap has no influence on which are enumerable properties are
   // shown in for-in.
   handler.has = function() { return true };
   assertEquals([], keys(object));
 
   handler.getOwnPropertyDescriptor = function() {
     return {enumerable: true, configurable: true}
@@ skipping 49 matching lines @@
     ownKeys() {
       return ['c'];
     },
     getOwnPropertyDescriptor() { return {configurable: true, enumerable: true } }
   }
   var proxy = new Proxy({}, handler);
   var proxy2 = new Proxy(proxy, {});
   assertEquals(['c'], keys(proxy));
   assertEquals(['c'], keys(proxy2));
 })();