Non DCTSIZE multiple width support for JPEG YUV decoding

Source/platform/graphics/ImageFrameGenerator.h

Index: Source/platform/graphics/ImageFrameGenerator.h
diff --git a/Source/platform/graphics/ImageFrameGenerator.h b/Source/platform/graphics/ImageFrameGenerator.h
index b3fbf58a2816e98b9bcbd5b80a0d21ae24e2beb4..e44e1fb1c16d5e77975b1748c8f457ff29e2af78 100644
--- a/Source/platform/graphics/ImageFrameGenerator.h
+++ b/Source/platform/graphics/ImageFrameGenerator.h
@@ -72,7 +72,7 @@ public:
     bool decodeAndScale(const SkImageInfo&, size_t index, void* pixels, size_t rowBytes);
 
     // Decodes YUV components directly into the provided memory planes.
-    bool decodeToYUV(void* planes[3], size_t rowBytes[3]);
+    bool decodeToYUV(SkISize componentSizes[3], void* planes[3], size_t rowBytes[3]);
 
     void setData(PassRefPtr<SharedBuffer>, bool allDataReceived);
 
@@ -97,6 +97,8 @@ private:
 
     void setHasAlpha(size_t index, bool hasAlpha);
 
+    void getYUVComponentSizes(const ImageDecoder*, SkISize componentSizes[3], bool memoryAllocation);
+
     // These methods are called while m_decodeMutex is locked.
     SkBitmap tryToResumeDecode(const SkISize& scaledSize, size_t index);