Remove duplication of encoded image data

third_party/WebKit/Source/platform/graphics/DeferredImageDecoderTest.cpp

 /*
  * Copyright (C) 2012 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.
  * 2.  Redistributions in binary form must reproduce the above copyright
@@ skipping 391 matching lines @@
     m_lazyDecoder->setData(*m_data, false);
     m_lazyDecoder->createFrameAtIndex(0);
     m_lazyDecoder->createFrameAtIndex(1);
     m_lazyDecoder->setData(*m_data, true);
     // Clears only the first frame (0 bytes). If DeferredImageDecoder doesn't
     // check with the actual decoder it reports 4 bytes instead.
     size_t frameBytesCleared = m_lazyDecoder->clearCacheExceptFrame(1);
     EXPECT_EQ(static_cast<size_t>(0), frameBytesCleared);
 }
 
+TEST_F(DeferredImageDecoderTest, data)
+{
+    RefPtr<SharedBuffer> originalData = SharedBuffer::create(m_data->data(), m_data->size());
+    EXPECT_EQ(originalData->size(), m_data->size());
+    m_lazyDecoder->setData(*originalData, false);
+    RefPtr<SharedBuffer> newData = m_lazyDecoder->data();
+    EXPECT_EQ(originalData->size(), newData->size());
+    EXPECT_EQ(0, std::memcmp(originalData->data(), newData->data(), newData->size()));
+}
+
 } // namespace blink