Pass InterpolationQuality into DragImage to respect image-rendering:pixelated.

Source/core/page/DragController.cpp

 /*
  * Copyright (C) 2007, 2009, 2010 Apple Inc. All rights reserved.
  * Copyright (C) 2008 Google Inc.
  *
  * 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
@@ skipping 808 matching lines @@
     static const IntSize maxDragImageSize(200, 200);
 #endif
     return maxDragImageSize;
 }
 
 static PassOwnPtr<DragImage> dragImageForImage(Element* element, Image* image, const IntPoint& dragOrigin, const IntRect& imageRect, IntPoint& dragLocation)
 {
     OwnPtr<DragImage> dragImage;
     IntPoint origin;
 
+    InterpolationQuality interpolationQuality = element->computedStyle()->imageRendering() == ImageRenderingPixelated ? InterpolationNone : InterpolationHigh;
     if (image->size().height() * image->size().width() <= MaxOriginalImageArea
-        && (dragImage = DragImage::create(image, element->renderer() ? element->renderer()->shouldRespectImageOrientation() : DoNotRespectImageOrientation))) {
+        && (dragImage = DragImage::create(image, element->renderer() ? element->renderer()->shouldRespectImageOrientation() : DoNotRespectImageOrientation, 1 /* deviceScaleFactor */, interpolationQuality))) {
         IntSize originalSize = imageRect.size();
         origin = imageRect.location();
 
         dragImage->fitToMaxSize(imageRect.size(), maxDragImageSize());
         dragImage->dissolveToFraction(DragImageAlpha);
         IntSize newSize = dragImage->size();
 
         // Properly orient the drag image and orient it differently if it's smaller than the original
         float scale = newSize.width() / (float)originalSize.width();
         float dx = origin.x() - dragOrigin.x();
@@ skipping 145 matching lines @@
 
 void DragController::trace(Visitor* visitor)
 {
     visitor->trace(m_page);
     visitor->trace(m_documentUnderMouse);
     visitor->trace(m_dragInitiator);
     visitor->trace(m_fileInputElementUnderMouse);
 }
 
 } // namespace blink