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

public/web/WebImageDecoder.h

 /*
  * Copyright (C) 2010 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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 44 matching lines @@
 
     // Sets data contents for underlying decoder. All the API methods
     // require that setData() is called prior to their use.
     WEBKIT_EXPORT void setData(const WebData& data, bool allDataReceived);
 
     // Deletes owned decoder.
     WEBKIT_EXPORT void reset();
 
     // Returns true if image decoding failed.
     WEBKIT_EXPORT bool isFailed() const;
-    
+
     // Returns true if size information is available for the decoder.
     WEBKIT_EXPORT bool isSizeAvailable() const;
 
     // Returns the size of the image.
     WEBKIT_EXPORT WebSize size() const;
 
     // Gives frame count for the image. For multiple frames, decoder scans the image data for the count.
     WEBKIT_EXPORT size_t frameCount() const;
 
     // Returns if the frame at given index is completely decoded.
     WEBKIT_EXPORT bool isFrameCompleteAtIndex(int index) const;
 
     // Creates and returns WebImage from buffer at the index.
     WEBKIT_EXPORT WebImage getFrameAtIndex(int index) const;
 
 private:
     // Creates type-specific decoder.
     WEBKIT_EXPORT void init(Type type);
 
     WebImageDecoderPrivate* m_private;
 };
 
 } // namespace WebKit
 
 #endif