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

Tools/DumpRenderTree/TestNetscapePlugIn/Tests/NPPNewFails.cpp

 /*
  * Copyright (C) 2012 Apple 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:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 17 matching lines @@
 #include <string.h>
 
 using namespace std;
 
 class NPPNewFails : public PluginTest {
 public:
     NPPNewFails(NPP npp, const string& identifier)
         : PluginTest(npp, identifier)
     {
     }
-    
+
 private:
-    
+
     virtual NPError NPP_New(NPMIMEType pluginType, uint16_t mode, int16_t argc, char* argn[], char* argv[], NPSavedData *saved)
     {
         return NPERR_GENERIC_ERROR;
     }
 };
 
 static PluginTest::Register<NPPNewFails> nppNewFails("npp-new-fails");