Change filter quality when scaling-down in drawImage

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

Index: third_party/WebKit/Source/platform/graphics/StaticBitmapImage.cpp
diff --git a/third_party/WebKit/Source/platform/graphics/StaticBitmapImage.cpp b/third_party/WebKit/Source/platform/graphics/StaticBitmapImage.cpp
index 3d85460343ee69b82b0ae05d01995c03eb727b2f..1e6cd0d353f2492283ad0e586b9cf92707f78ca0 100644
--- a/third_party/WebKit/Source/platform/graphics/StaticBitmapImage.cpp
+++ b/third_party/WebKit/Source/platform/graphics/StaticBitmapImage.cpp
@@ -61,7 +61,7 @@ bool StaticBitmapImage::currentFrameKnownToBeOpaque(MetadataMode)
 }
 
 void StaticBitmapImage::draw(SkCanvas* canvas, const SkPaint& paint, const FloatRect& dstRect,
-    const FloatRect& srcRect, RespectImageOrientationEnum, ImageClampingMode clampMode)
+    const FloatRect& srcRect, bool imageSmoothingEnabled, RespectImageOrientationEnum, ImageClampingMode clampMode)
 {
     FloatRect adjustedSrcRect = srcRect;
     adjustedSrcRect.intersect(SkRect::Make(m_image->bounds()));
@@ -69,7 +69,11 @@ void StaticBitmapImage::draw(SkCanvas* canvas, const SkPaint& paint, const Float
     if (dstRect.isEmpty() || adjustedSrcRect.isEmpty())
         return; // Nothing to draw.
 
-    canvas->drawImageRect(m_image.get(), adjustedSrcRect, dstRect, &paint,
+    SkPaint adjustedPaint = paint;
+    if (!imageSmoothingEnabled && Image::isDrawScalingDown(adjustedSrcRect, dstRect))
+        adjustedPaint.setFilterQuality(kLow_SkFilterQuality);
+
+    canvas->drawImageRect(m_image.get(), adjustedSrcRect, dstRect, &adjustedPaint,
         WebCoreClampingModeToSkiaRectConstraint(clampMode));
 
     if (ImageObserver* observer = getImageObserver())