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

Source/wtf/MessageQueue.h

 /*
  * Copyright (C) 2008 Apple Inc. All rights reserved.
  * Copyright (C) 2009 Google 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.
@@ skipping 114 matching lines @@
     inline void MessageQueue<DataType>::prepend(PassOwnPtr<DataType> message)
     {
         MutexLocker lock(m_mutex);
         m_queue.prepend(message.leakPtr());
         m_condition.signal();
     }
 
     template<typename DataType>
     inline PassOwnPtr<DataType> MessageQueue<DataType>::waitForMessage()
     {
-        MessageQueueWaitResult exitReason; 
+        MessageQueueWaitResult exitReason;
         OwnPtr<DataType> result = waitForMessageFilteredWithTimeout(exitReason, MessageQueue<DataType>::alwaysTruePredicate, infiniteTime());
         ASSERT(exitReason == MessageQueueTerminated || exitReason == MessageQueueMessageReceived);
         return result.release();
     }
 
     template<typename DataType>
     template<typename Predicate>
     inline PassOwnPtr<DataType> MessageQueue<DataType>::waitForMessageFilteredWithTimeout(MessageQueueWaitResult& result, Predicate& predicate, double absoluteTime)
     {
         MutexLocker lock(m_mutex);
@@ skipping 83 matching lines @@
 } // namespace WTF
 
 using WTF::MessageQueue;
 // MessageQueueWaitResult enum and all its values.
 using WTF::MessageQueueWaitResult;
 using WTF::MessageQueueTerminated;
 using WTF::MessageQueueTimeout;
 using WTF::MessageQueueMessageReceived;
 
 #endif // MessageQueue_h