Fix trailing whitespace in .cpp, .h, and .idl files (ex. Source/core)

Source/bindings/v8/custom/V8XMLHttpRequestCustom.cpp

 /*
  * Copyright (C) 2008, 2009, 2010 Google Inc. 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
@@ skipping 136 matching lines @@
     ScriptExecutionContext* context = getScriptExecutionContext();
     KURL url = context->completeURL(urlstring);
 
     ExceptionState es(args.GetIsolate());
 
     if (args.Length() >= 3) {
         bool async = args[2]->BooleanValue();
 
         if (args.Length() >= 4 && !args[3]->IsUndefined()) {
             String user = toWebCoreStringWithNullCheck(args[3]);
-            
+
             if (args.Length() >= 5 && !args[4]->IsUndefined()) {
                 String passwd = toWebCoreStringWithNullCheck(args[4]);
                 xmlHttpRequest->open(method, url, async, user, passwd, es);
             } else {
                 xmlHttpRequest->open(method, url, async, user, es);
             }
         } else {
             xmlHttpRequest->open(method, url, async, es);
         }
     } else {
@@ skipping 49 matching lines @@
             ASSERT(arrayBufferView);
             xmlHttpRequest->send(arrayBufferView, es);
         } else
             xmlHttpRequest->send(toWebCoreStringWithNullCheck(arg), es);
     }
 
     es.throwIfNeeded();
 }
 
 } // namespace WebCore