Change filter quality when scaling-down in drawImage

third_party/WebKit/Source/platform/graphics/BitmapImage.cpp

Index: third_party/WebKit/Source/platform/graphics/BitmapImage.cpp
diff --git a/third_party/WebKit/Source/platform/graphics/BitmapImage.cpp b/third_party/WebKit/Source/platform/graphics/BitmapImage.cpp
index 17d815c5049c96f11bf0829b3427eecc716e092f..130fd8b6bd3df9c02e59b6a9c63d0613027e49ae 100644
--- a/third_party/WebKit/Source/platform/graphics/BitmapImage.cpp
+++ b/third_party/WebKit/Source/platform/graphics/BitmapImage.cpp
@@ -235,7 +235,7 @@ String BitmapImage::filenameExtension() const
     return m_source.filenameExtension();
 }
 
-void BitmapImage::draw(SkCanvas* canvas, const SkPaint& paint, const FloatRect& dstRect, const FloatRect& srcRect, RespectImageOrientationEnum shouldRespectImageOrientation, ImageClampingMode clampMode)
+void BitmapImage::draw(SkCanvas* canvas, const SkPaint& paint, const FloatRect& dstRect, const FloatRect& srcRect, bool imageSmoothingEnabled, RespectImageOrientationEnum shouldRespectImageOrientation, ImageClampingMode clampMode)
 {
     TRACE_EVENT0("skia", "BitmapImage::draw");
 
@@ -271,7 +271,11 @@ void BitmapImage::draw(SkCanvas* canvas, const SkPaint& paint, const FloatRect&
         }
     }
 
-    canvas->drawImageRect(image.get(), adjustedSrcRect, adjustedDstRect, &paint,
+    SkPaint adjustedPaint = paint;
+    if (!imageSmoothingEnabled && Image::isDrawScalingDown(adjustedSrcRect, adjustedDstRect))
+        adjustedPaint.setFilterQuality(kLow_SkFilterQuality);
+
+    canvas->drawImageRect(image.get(), adjustedSrcRect, adjustedDstRect, &adjustedPaint,
         WebCoreClampingModeToSkiaRectConstraint(clampMode));
 
     if (image->isLazyGenerated())