Remove full-size bitmap copy on SkImage::scalePixels->IFG::decodeAndScale

third_party/WebKit/Source/platform/graphics/DecodingImageGenerator.h

Index: third_party/WebKit/Source/platform/graphics/DecodingImageGenerator.h
diff --git a/third_party/WebKit/Source/platform/graphics/DecodingImageGenerator.h b/third_party/WebKit/Source/platform/graphics/DecodingImageGenerator.h
index fb2a0732b6c982abb84fd3caa256da1750a08dc5..cd366be06c4e02d30d5c558e8e33635bbff86d9b 100644
--- a/third_party/WebKit/Source/platform/graphics/DecodingImageGenerator.h
+++ b/third_party/WebKit/Source/platform/graphics/DecodingImageGenerator.h
@@ -73,6 +73,11 @@ class PLATFORM_EXPORT DecodingImageGenerator final : public SkImageGenerator {
                    SkPMColor table[],
                    int* tableCount) override;
 
+  bool onGenerateScaledPixels(const SkISize&,
+                              const SkIPoint&,
+                              const SkPixmap&,
+                              SkFilterQuality) override;
+
   bool onQueryYUV8(SkYUVSizeInfo*, SkYUVColorSpace*) const override;
 
   bool onGetYUV8Planes(const SkYUVSizeInfo&, void* planes[3]) override;