Implement image-rendering:pixelated for directly composited images.

Source/platform/graphics/GraphicsLayer.cpp

 /*
  * Copyright (C) 2009 Apple Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 987 matching lines @@
 void GraphicsLayer::setFilters(const FilterOperations& filters)
 {
     SkiaImageFilterBuilder builder;
     OwnPtr<WebFilterOperations> webFilters = adoptPtr(Platform::current()->compositorSupport()->createFilterOperations());
     FilterOutsets outsets = filters.outsets();
     builder.setCropOffset(FloatSize(outsets.left(), outsets.top()));
     builder.buildFilterOperations(filters, webFilters.get());
     m_layer->layer()->setFilters(*webFilters);
 }
 
+void GraphicsLayer::setFilterLevel(SkPaint::FilterLevel filterLevel)
+{
+    if (m_imageLayer)
+        m_imageLayer->setNearestNeighbor(filterLevel == SkPaint::kNone_FilterLevel);
+}
+
 void GraphicsLayer::setPaintingPhase(GraphicsLayerPaintingPhase phase)
 {
     if (m_paintingPhase == phase)
         return;
     m_paintingPhase = phase;
     setNeedsDisplay();
 }
 
 void GraphicsLayer::addLinkHighlight(LinkHighlightClient* linkHighlight)
 {
@@ skipping 63 matching lines @@
 #ifndef NDEBUG
 void showGraphicsLayerTree(const blink::GraphicsLayer* layer)
 {
     if (!layer)
         return;
 
     String output = layer->layerTreeAsText(blink::LayerTreeIncludesDebugInfo);
     fprintf(stderr, "%s\n", output.utf8().data());
 }
 #endif