Make more JS files beter match the coding standard.

test/mjsunit/for-in-delete.js

 // Copyright 2010 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 20 matching lines @@
 function f(o, expected, del) {
   var index = 0;
   for (p in o) {
     if (del) delete o[del];
     assertEquals(expected[index], p);
     index++;
   }
   assertEquals(expected.length, index);
 }
 
-var o = {}
+var o = {};
 o.a = 1;
 o.b = 2;
 o.c = 3;
 o.d = 3;
 
 f(o, ['a', 'b', 'c', 'd']);
 f(o, ['a', 'b', 'c', 'd']);
 f(o, ['a', 'c', 'd'], 'b');
 f(o, ['a', 'c'], 'd');