Implement InterpolationMedium to filter animated images

Source/core/rendering/svg/RenderSVGImage.cpp

 /*
  * Copyright (C) 2006 Alexander Kellett <lypanov@kde.org>
  * Copyright (C) 2006 Apple Computer, Inc.
  * Copyright (C) 2007 Nikolas Zimmermann <zimmermann@kde.org>
  * Copyright (C) 2007, 2008, 2009 Rob Buis <buis@kde.org>
  * Copyright (C) 2009 Google, Inc.
  * Copyright (C) 2009 Dirk Schulze <krit@webkit.org>
  * Copyright (C) 2010 Patrick Gansterer <paroga@paroga.com>
  *
  * This library is free software; you can redistribute it and/or
@@ skipping 150 matching lines @@
 
 void RenderSVGImage::paintForeground(PaintInfo& paintInfo)
 {
     RefPtr<Image> image = m_imageResource->image();
     FloatRect destRect = m_objectBoundingBox;
     FloatRect srcRect(0, 0, image->width(), image->height());
 
     SVGImageElement* imageElement = toSVGImageElement(element());
     imageElement->preserveAspectRatio()->currentValue()->transformRect(destRect, srcRect);
 
-    bool useLowQualityScaling = false;
+    InterpolationQuality interpolationQuality = InterpolationDefault;
     if (style()->svgStyle()->bufferedRendering() != BR_STATIC)
-        useLowQualityScaling = ImageQualityController::imageQualityController()->shouldPaintAtLowQuality(paintInfo.context, this, image.get(), image.get(), LayoutSize(destRect.size()));
+        interpolationQuality = ImageQualityController::imageQualityController()->chooseInterpolationQuality(paintInfo.context, this, image.get(), image.get(), LayoutSize(destRect.size()));
 
-    paintInfo.context->drawImage(image.get(), destRect, srcRect, CompositeSourceOver, DoNotRespectImageOrientation, useLowQualityScaling);
+    InterpolationQuality previousInterpolationQuality = paintInfo.context->imageInterpolationQuality();
+    paintInfo.context->setImageInterpolationQuality(interpolationQuality);
+    paintInfo.context->drawImage(image.get(), destRect, srcRect, CompositeSourceOver);
+    paintInfo.context->setImageInterpolationQuality(previousInterpolationQuality);
 }
 
 void RenderSVGImage::invalidateBufferedForeground()
 {
     m_bufferedForeground.clear();
 }
 
 bool RenderSVGImage::nodeAtFloatPoint(const HitTestRequest& request, HitTestResult& result, const FloatPoint& pointInParent, HitTestAction hitTestAction)
 {
     // We only draw in the forground phase, so we only hit-test then.
@@ skipping 41 matching lines @@
 
 void RenderSVGImage::addFocusRingRects(Vector<IntRect>& rects, const LayoutPoint&, const RenderLayerModelObject*)
 {
     // this is called from paint() after the localTransform has already been applied
     IntRect contentRect = enclosingIntRect(repaintRectInLocalCoordinates());
     if (!contentRect.isEmpty())
         rects.append(contentRect);
 }
 
 } // namespace WebCore