Make image-rendering:pixelated use nearest neighbor when downscaling.

Source/core/paint/HTMLCanvasPainter.cpp

Index: Source/core/paint/HTMLCanvasPainter.cpp
diff --git a/Source/core/paint/HTMLCanvasPainter.cpp b/Source/core/paint/HTMLCanvasPainter.cpp
index 236f7b6083a66991cec3667e6849b1f9f83f88e2..e5180e0cf62dc85c22716d2c566653d888304009 100644
--- a/Source/core/paint/HTMLCanvasPainter.cpp
+++ b/Source/core/paint/HTMLCanvasPainter.cpp
@@ -32,18 +32,13 @@ void HTMLCanvasPainter::paintReplaced(const PaintInfo& paintInfo, const LayoutPo
     // FIXME: InterpolationNone should be used if ImageRenderingOptimizeContrast is set.
     // See bug for more details: crbug.com/353716.
     InterpolationQuality interpolationQuality = m_renderHTMLCanvas.style()->imageRendering() == ImageRenderingOptimizeContrast ? InterpolationLow : CanvasDefaultInterpolationQuality;
-
-    HTMLCanvasElement* canvas = toHTMLCanvasElement(m_renderHTMLCanvas.node());
-    LayoutSize layoutSize = contentRect.size();
-    if (m_renderHTMLCanvas.style()->imageRendering() == ImageRenderingPixelated
-        && (layoutSize.width() > canvas->width() || layoutSize.height() > canvas->height() || layoutSize == canvas->size())) {
+    if (m_renderHTMLCanvas.style()->imageRendering() == ImageRenderingPixelated)
         interpolationQuality = InterpolationNone;
-    }
 
     RenderDrawingRecorder recorder(context, &m_renderHTMLCanvas, localPaintInfo.phase, pixelSnappedIntRect(paintRect));
     InterpolationQuality previousInterpolationQuality = context->imageInterpolationQuality();
     context->setImageInterpolationQuality(interpolationQuality);
-    canvas->paint(context, paintRect);
+    toHTMLCanvasElement(m_renderHTMLCanvas.node())->paint(context, paintRect);
     context->setImageInterpolationQuality(previousInterpolationQuality);
 }