Remove trailing spaces from js files.

src/d8.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 931 matching lines @@
 
     // Get the running state.
     details.running = response.running();
 
     var body = response.body();
     var result = '';
     switch (response.command()) {
       case 'suspend':
         details.text = 'stopped';
         break;
-        
+
       case 'setbreakpoint':
         result = 'set breakpoint #';
         result += body.breakpoint;
         details.text = result;
         break;
 
       case 'clearbreakpoint':
         result = 'cleared breakpoint #';
         result += body.breakpoint;
         details.text = result;
         break;
-        
+
       case 'listbreakpoints':
         result = 'breakpoints: (' + body.breakpoints.length + ')';
         for (var i = 0; i < body.breakpoints.length; i++) {
           var breakpoint = body.breakpoints[i];
           result += '\n id=' + breakpoint.number;
           result += ' type=' + breakpoint.type;
           if (breakpoint.script_id) {
               result += ' script_id=' + breakpoint.script_id;
           }
           if (breakpoint.script_name) {
@@ skipping 699 matching lines @@
       json += NumberToJSON_(elem);
     } else if (typeof(elem) === 'string')  {
       json += StringToJSON_(elem);
     } else {
       json += elem;
     }
   }
   json += ']';
   return json;
 }