Remove ImageData::dispose()

third_party/WebKit/Source/core/html/ImageData.cpp

 /*
  * Copyright (C) 2008 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
@@ skipping 164 matching lines @@
 }
 
 ImageData::ImageData(const IntSize& size, DOMUint8ClampedArray* byteArray)
     : m_size(size)
     , m_data(byteArray)
 {
     ASSERT(size.width() >= 0 && size.height() >= 0);
     ASSERT_WITH_SECURITY_IMPLICATION(static_cast<unsigned>(size.width() * size.height() * 4) <= m_data->length());
 }
 
-void ImageData::dispose()
-{
-    m_data.clear();
-}
-
 } // namespace blink