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

Tools/DumpRenderTree/TestNetscapePlugIn/Tests/SlowNPPNew.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 SlowNPPNew : public PluginTest {
 public:
     SlowNPPNew(NPP npp, const string& identifier)
         : PluginTest(npp, identifier)
     {
     }
-    
+
 private:
     class PluginObject : public Object<PluginObject> {
     public:
         PluginObject()
         {
         }
 
         ~PluginObject()
         {
         }
 
         bool hasProperty(NPIdentifier propertyName)
         {
             return true;
         }
 
         bool getProperty(NPIdentifier propertyName, NPVariant* result)
         {
             static const char* message = "My name is ";
             char* propertyString = pluginTest()->NPN_UTF8FromIdentifier(propertyName);
-            
+
             int bufferLength = strlen(propertyString) + strlen(message) + 1;
             char* resultBuffer = static_cast<char*>(pluginTest()->NPN_MemAlloc(bufferLength));
             snprintf(resultBuffer, bufferLength, "%s%s", message, propertyString);
-            
+
             STRINGZ_TO_NPVARIANT(resultBuffer, *result);
 
             return true;
         }
     };
-    
+
     virtual NPError NPP_GetValue(NPPVariable variable, void *value)
     {
         if (variable != NPPVpluginScriptableNPObject)
             return NPERR_GENERIC_ERROR;
-        
+
         *(NPObject**)value = PluginObject::create(this);
-        
+
         return NPERR_NO_ERROR;
     }
 
     virtual NPError NPP_New(NPMIMEType pluginType, uint16_t mode, int16_t argc, char* argn[], char* argv[], NPSavedData *saved)
     {
         usleep(550000);
         return NPERR_NO_ERROR;
     }
 };
 
 static PluginTest::Register<SlowNPPNew> slowNPPNew("slow-npp-new");