Added check for trailing whitespaces and corrected existing violations.

test/mjsunit/setter-on-constructor-prototype.js

 // Copyright 2008 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 17 matching lines @@
 // Flags: --allow-natives-syntax
 
 function RunTest(ensure_fast_case) {
   function C1() {
     this.x = 23;
   };
   C1.prototype = { set x(value) { this.y = 23; } };
   if (ensure_fast_case) {
     %ToFastProperties(C1.prototype);
   }
-  
+
   for (var i = 0; i < 10; i++) {
     var c1 = new C1();
     assertEquals("undefined", typeof c1.x);
     assertEquals(23, c1.y);
   }
-  
-  
+
+
   function C2() {
     this.x = 23;
   };
   C2.prototype = { };
   C2.prototype.__proto__ = { set x(value) { this.y = 23; } };
   if (ensure_fast_case) {
     %ToFastProperties(C2.prototype.__proto__)
   }
-  
+
   for (var i = 0; i < 10; i++) {
     var c2 = new C2();
     assertEquals("undefined", typeof c2.x);
     assertEquals(23, c2.y);
   }
-  
-  
+
+
   function C3() {
     this.x = 23;
   };
   C3.prototype = { };
   C3.prototype.__defineSetter__('x', function(value) { this.y = 23; });
   if (ensure_fast_case) {
     %ToFastProperties(C3.prototype);
   }
-  
+
   for (var i = 0; i < 10; i++) {
     var c3 = new C3();
     assertEquals("undefined", typeof c3.x);
     assertEquals(23, c3.y);
   }
-  
-  
+
+
   function C4() {
     this.x = 23;
   };
   C4.prototype = { };
   C4.prototype.__proto__ = {  };
   C4.prototype.__proto__.__defineSetter__('x', function(value) { this.y = 23; });
   if (ensure_fast_case) {
     %ToFastProperties(C4.prototype.__proto__);
   }
-  
+
   for (var i = 0; i < 10; i++) {
     var c4 = new C4();
     assertEquals("undefined", typeof c4.x);
     assertEquals(23, c4.y);
   }
-  
-  
+
+
   function D() {
     this.x = 23;
   };
   D.prototype = 1;
   if (ensure_fast_case) {
     %ToFastProperties(D.prototype);
   }
-  
+
   for (var i = 0; i < 10; i++) {
     var d = new D();
     assertEquals(23, d.x);
     assertEquals("undefined", typeof d.y);
   }
 }
 
 RunTest(false);
 RunTest(true);