Eliminate copies of encoded image data

third_party/WebKit/Source/platform/blink_platform.gypi

 {
   'includes': [
     'platform_generated.gypi',
   ],
   'variables': {
     'platform_files': [
       'AsyncFileSystemCallbacks.h',
       'CalculationValue.h',
       'CheckedInt.h',
       'ContentDecryptionModuleResult.h',
@@ skipping 640 matching lines @@
       'graphics/RecordingImageBufferSurface.cpp',
       'graphics/RecordingImageBufferSurface.h',
       'graphics/ReplayingCanvas.cpp',
       'graphics/ReplayingCanvas.h',
       'graphics/SquashingDisallowedReasons.cpp',
       'graphics/SquashingDisallowedReasons.h',
       'graphics/StaticBitmapImage.cpp',
       'graphics/StaticBitmapImage.h',
       'graphics/StrokeData.cpp',
       'graphics/StrokeData.h',
-      'graphics/ThreadSafeDataTransport.cpp',
-      'graphics/ThreadSafeDataTransport.h',
       'graphics/UnacceleratedImageBufferSurface.cpp',
       'graphics/UnacceleratedImageBufferSurface.h',
       'graphics/compositing/PaintArtifactCompositor.cpp',
       'graphics/compositing/PaintArtifactCompositor.h',
       'graphics/cpu/arm/WebGLImageConversionNEON.h',
       'graphics/cpu/x86/WebGLImageConversionSSE.h',
       'graphics/filters/DistantLightSource.cpp',
       'graphics/filters/DistantLightSource.h',
       'graphics/filters/FEBlend.cpp',
       'graphics/filters/FEBlend.h',
@@ skipping 115 matching lines @@
       'graphics/paint/TransformDisplayItem.cpp',
       'graphics/paint/TransformDisplayItem.h',
       'graphics/paint/TransformPaintPropertyNode.h',
       'graphics/paint/CompositingDisplayItem.cpp',
       'graphics/paint/CompositingDisplayItem.h',
       'graphics/skia/ImagePixelLocker.cpp',
       'graphics/skia/ImagePixelLocker.h',
       'graphics/skia/SkSizeHash.h',
       'graphics/skia/SkiaUtils.cpp',
       'graphics/skia/SkiaUtils.h',
+      'image-decoders/DataSegmentReader.cpp',
       'image-decoders/FastSharedBufferReader.cpp',
       'image-decoders/FastSharedBufferReader.h',
       'image-decoders/ImageAnimation.h',
       'image-decoders/ImageDecoder.cpp',
       'image-decoders/ImageDecoder.h',
       'image-decoders/ImageFrame.cpp',
       'image-decoders/ImageFrame.h',
+      'image-decoders/ROBufferSegmentReader.cpp',
+      'image-decoders/SharedBufferSegmentReader.cpp',
+      'image-decoders/SegmentReader.h',
       'image-decoders/bmp/BMPImageDecoder.cpp',
       'image-decoders/bmp/BMPImageDecoder.h',
       'image-decoders/bmp/BMPImageReader.cpp',
       'image-decoders/bmp/BMPImageReader.h',
       'image-decoders/gif/GIFImageDecoder.cpp',
       'image-decoders/gif/GIFImageDecoder.h',
       'image-decoders/gif/GIFImageReader.cpp',
       'image-decoders/gif/GIFImageReader.h',
       'image-decoders/ico/ICOImageDecoder.cpp',
       'image-decoders/ico/ICOImageDecoder.h',
@@ skipping 354 matching lines @@
       'geometry/GeometryTestHelpers.cpp',
       'geometry/IntRectTest.cpp',
       'geometry/LayoutRectTest.cpp',
       'geometry/LayoutRectOutsetsTest.cpp',
       'geometry/RegionTest.cpp',
       'graphics/BitmapImageTest.cpp',
       'graphics/CompositorMutableStateTest.cpp',
       'graphics/ContiguousContainerTest.cpp',
       'graphics/GraphicsContextTest.cpp',
       'graphics/RecordingImageBufferSurfaceTest.cpp',
-      'graphics/ThreadSafeDataTransportTest.cpp',
       'graphics/compositing/PaintArtifactCompositorTest.cpp',
       'graphics/filters/FilterOperationsTest.cpp',
       'graphics/filters/ImageFilterBuilderTest.cpp',
       'graphics/gpu/DrawingBufferTest.cpp',
       'graphics/paint/DisplayItemClientTest.cpp',
       'graphics/paint/DisplayItemListTest.cpp',
       'graphics/paint/DisplayItemTest.cpp',
       'graphics/paint/PaintArtifactToSkCanvasTest.cpp',
       'graphics/paint/PaintChunkerTest.cpp',
       'graphics/paint/PaintControllerTest.cpp',
@@ skipping 96 matching lines @@
       ['OS!="mac"',
         {
           'platform_test_files': [
             'scroll/ScrollAnimatorTest.cpp',
           ],
         }
       ],
     ],
   },
 }