Eliminate copies of encoded image data

third_party/WebKit/Source/platform/graphics/ImageDecodingStoreTest.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
  *     notice, this list of conditions and the following disclaimer in the
  *     documentation and/or other materials provided with the distribution.
  *
  * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
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  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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 #include "platform/graphics/ImageDecodingStore.h"
 
-#include "platform/SharedBuffer.h"
 #include "platform/graphics/ImageFrameGenerator.h"
 #include "platform/graphics/test/MockImageDecoder.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace blink {
 
 class ImageDecodingStoreTest : public ::testing::Test, public MockImageDecoderClient {
 public:
     void SetUp() override
     {
         ImageDecodingStore::instance().setCacheLimitInBytes(1024 * 1024);
-        m_data = SharedBuffer::create();
-        m_generator = ImageFrameGenerator::create(SkISize::Make(100, 100), m_data, true);
+        m_generator = ImageFrameGenerator::create(SkISize::Make(100, 100), true);
         m_decodersDestroyed = 0;
     }
 
     void TearDown() override
     {
         ImageDecodingStore::instance().clear();
     }
 
     void decoderBeingDestroyed() override
     {
@@ skipping 18 matching lines @@
 protected:
     void evictOneCache()
     {
         size_t memoryUsageInBytes = ImageDecodingStore::instance().memoryUsageInBytes();
         if (memoryUsageInBytes)
             ImageDecodingStore::instance().setCacheLimitInBytes(memoryUsageInBytes - 1);
         else
             ImageDecodingStore::instance().setCacheLimitInBytes(0);
     }
 
-    RefPtr<SharedBuffer> m_data;
     RefPtr<ImageFrameGenerator> m_generator;
     int m_decodersDestroyed;
 };
 
 TEST_F(ImageDecodingStoreTest, insertDecoder)
 {
     const SkISize size = SkISize::Make(1, 1);
     OwnPtr<ImageDecoder> decoder = MockImageDecoder::create(this);
     decoder->setSize(1, 1);
     const ImageDecoder* refDecoder = decoder.get();
@@ skipping 78 matching lines @@
     EXPECT_TRUE(ImageDecodingStore::instance().lockDecoder(m_generator.get(), size, &testDecoder));
     EXPECT_TRUE(testDecoder);
     EXPECT_EQ(refDecoder, testDecoder);
     ImageDecodingStore::instance().removeDecoder(m_generator.get(), testDecoder);
     EXPECT_FALSE(ImageDecodingStore::instance().cacheEntries());
 
     EXPECT_FALSE(ImageDecodingStore::instance().lockDecoder(m_generator.get(), size, &testDecoder));
 }
 
 } // namespace blink