Remove image decoder down sampling

Source/core/platform/image-decoders/jpeg/JPEGImageDecoder.h

Index: Source/core/platform/image-decoders/jpeg/JPEGImageDecoder.h
diff --git a/Source/core/platform/image-decoders/jpeg/JPEGImageDecoder.h b/Source/core/platform/image-decoders/jpeg/JPEGImageDecoder.h
index 468ff14064e471a1ce160ea624de28bac88ffeed..fd24561f8a7e00a975d1c6ae7922339083a80192 100644
--- a/Source/core/platform/image-decoders/jpeg/JPEGImageDecoder.h
+++ b/Source/core/platform/image-decoders/jpeg/JPEGImageDecoder.h
@@ -48,19 +48,12 @@ namespace WebCore {
         // ImageDecoder
         virtual String filenameExtension() const { return "jpg"; }
         virtual bool isSizeAvailable();
-        virtual bool setSize(unsigned width, unsigned height);
         virtual ImageFrame* frameBufferAtIndex(size_t index);
         // CAUTION: setFailed() deletes |m_reader|.  Be careful to avoid
         // accessing deleted memory, especially when calling this from inside
         // JPEGImageReader!
         virtual bool setFailed();
 
-        bool willDownSample()
-        {
-            ASSERT(ImageDecoder::isSizeAvailable());
-            return m_scaled;
-        }
-
         bool outputScanlines();
         void jpegComplete();
 
@@ -75,9 +68,6 @@ namespace WebCore {
         template <J_COLOR_SPACE colorSpace>
         bool outputScanlines(ImageFrame& buffer);
 
-        template <J_COLOR_SPACE colorSpace, bool isScaled>
-        bool outputScanlines(ImageFrame& buffer);
-
         OwnPtr<JPEGImageReader> m_reader;
     };