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

Tools/DumpRenderTree/TestNetscapePlugIn/Tests/GetURLWithJavaScriptURL.cpp

 /*
  * Copyright (C) 2011 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 82 matching lines @@
         if (stream->pdata != this)
             m_didFail = true;
 
         return 2;
     }
 
     int32_t NPP_Write(NPStream* stream, int32_t offset, int32_t len, void* buffer)
     {
         if (stream->pdata != this)
             m_didFail = true;
-        
+
         m_data.insert(m_data.end(), static_cast<char*>(buffer), static_cast<char*>(buffer) + len);
         return len;
     }
 
     vector<char> m_data;
     bool m_didFail;
 };
 
 static PluginTest::Register<GetURLWithJavaScriptURL> getURLWithJavaScriptURLDestroyingPlugin("get-url-with-javascript-url");