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

Tools/DumpRenderTree/TestNetscapePlugIn/Tests/LogNPPSetWindow.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 @@
 {
 }
 
 NPError LogNPPSetWindow::NPP_SetWindow(NPWindow* window)
 {
     char message[1024];
     snprintf(message, 1024, "NPP_SetWindow: %s window, Rect {%i, %i, %i, %i}, Clip Rect {%i, %i, %i, %i}, Type %i",
         window->window ? "non-NULL" : "NULL", window->x, window->y, window->width, window->height,
         window->clipRect.left, window->clipRect.top, window->clipRect.right, window->clipRect.bottom,
         window->type);
-    
+
     char script[1536];
     snprintf(script, 1536, "window.setTimeout('windowWasSet(\"%s\");', 0);", message);
 
     executeScript(script);
 
     return NPERR_NO_ERROR;
 }
 
 static PluginTest::Register<LogNPPSetWindow> registrar("log-npp-set-window");