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

Tools/DumpRenderTree/TestNetscapePlugIn/Tests/InvokeDestroysPluginWithinNPP_New.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 31 matching lines @@
 
 InvokeDestroysPluginWithinNPP_New::InvokeDestroysPluginWithinNPP_New(NPP npp, const string& identifier)
     : PluginTest(npp, identifier)
 {
 }
 
 NPError InvokeDestroysPluginWithinNPP_New::NPP_New(NPMIMEType pluginType, uint16_t mode, int16_t argc, char* argn[], char* argv[], NPSavedData *saved)
 {
     // Give the WebProcess enough time to be deadlocked waiting for the PluginProcess if things aren't working correctly.
     usleep(15000);
-    
+
     NPObject* windowObject = 0;
     if (NPN_GetValue(NPNVWindowNPObject, &windowObject) != NPERR_NO_ERROR)
         return NPERR_GENERIC_ERROR;
-    
+
     if (!windowObject)
         return NPERR_GENERIC_ERROR;
-    
+
     NPVariant result;
     if (!NPN_Invoke(windowObject, NPN_GetStringIdentifier("removePluginElement"), 0, 0, &result))
         return NPERR_GENERIC_ERROR;
 
     return NPERR_NO_ERROR;
 }
 
 static PluginTest::Register<InvokeDestroysPluginWithinNPP_New> registrar("invoke-destroys-plugin-within-npp-new");