Eliminate copies of encoded image data

third_party/WebKit/Source/platform/image-decoders/jpeg/JPEGImageDecoderTest.cpp

Index: third_party/WebKit/Source/platform/image-decoders/jpeg/JPEGImageDecoderTest.cpp
diff --git a/third_party/WebKit/Source/platform/image-decoders/jpeg/JPEGImageDecoderTest.cpp b/third_party/WebKit/Source/platform/image-decoders/jpeg/JPEGImageDecoderTest.cpp
index 9f2c660ff300aca73abfdf6e331845256eefefc4..f930315da3da092827e3604422b39dfa679ac664 100644
--- a/third_party/WebKit/Source/platform/image-decoders/jpeg/JPEGImageDecoderTest.cpp
+++ b/third_party/WebKit/Source/platform/image-decoders/jpeg/JPEGImageDecoderTest.cpp
@@ -33,6 +33,7 @@
 #include "platform/SharedBuffer.h"
 #include "platform/image-decoders/ImageAnimation.h"
 #include "platform/image-decoders/ImageDecoderTestHelpers.h"
+#include "platform/image-decoders/SharedBufferSegmentReader.h"
 #include "public/platform/WebData.h"
 #include "public/platform/WebSize.h"
 #include "testing/gtest/include/gtest/gtest.h"
@@ -63,7 +64,8 @@ void downsample(size_t maxDecodedBytes, unsigned* outputWidth, unsigned* outputH
     ASSERT_TRUE(data);
 
     OwnPtr<ImageDecoder> decoder = createDecoder(maxDecodedBytes);
-    decoder->setData(data.get(), true);
+    RefPtr<SharedBufferSegmentReader> segmentReader = adoptRef(new SharedBufferSegmentReader(data));
+    decoder->setData(segmentReader.get(), true);
 
     ImageFrame* frame = decoder->frameBufferAtIndex(0);
     ASSERT_TRUE(frame);
@@ -78,7 +80,8 @@ void readYUV(size_t maxDecodedBytes, unsigned* outputYWidth, unsigned* outputYHe
     ASSERT_TRUE(data);
 
     OwnPtr<ImageDecoder> decoder = createDecoder(maxDecodedBytes);
-    decoder->setData(data.get(), true);
+    RefPtr<SharedBufferSegmentReader> segmentReader = adoptRef(new SharedBufferSegmentReader(data));
+    decoder->setData(segmentReader.get(), true);
 
     OwnPtr<ImagePlanes> imagePlanes = adoptPtr(new ImagePlanes());
     decoder->setImagePlanes(imagePlanes.release());
@@ -222,7 +225,8 @@ TEST(JPEGImageDecoderTest, yuv)
     ASSERT_TRUE(data);
 
     OwnPtr<ImageDecoder> decoder = createDecoder(230 * 230 * 4);
-    decoder->setData(data.get(), true);
+    RefPtr<SharedBufferSegmentReader> segmentReader = adoptRef(new SharedBufferSegmentReader(data));
+    decoder->setData(segmentReader.get(), true);
 
     OwnPtr<ImagePlanes> imagePlanes = adoptPtr(new ImagePlanes());
     decoder->setImagePlanes(imagePlanes.release());