Implement InterpolationMedium to filter animated images

Source/core/html/canvas/CanvasRenderingContext2D.cpp

 /*
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012 Apple Inc. All rights reserved.
  * Copyright (C) 2008, 2010 Nokia Corporation and/or its subsidiary(-ies)
  * Copyright (C) 2007 Alp Toker <alp@atoker.com>
  * Copyright (C) 2008 Eric Seidel <eric@webkit.org>
  * Copyright (C) 2008 Dirk Schulze <krit@webkit.org>
  * Copyright (C) 2010 Torch Mobile (Beijing) Co. Ltd. All rights reserved.
  * Copyright (C) 2012, 2013 Intel Corporation. All rights reserved.
  * Copyright (C) 2013 Adobe Systems Incorporated. All rights reserved.
  *
@@ skipping 2179 matching lines @@
 
 void CanvasRenderingContext2D::setImageSmoothingEnabled(bool enabled)
 {
     if (enabled == state().m_imageSmoothingEnabled)
         return;
 
     realizeSaves();
     modifiableState().m_imageSmoothingEnabled = enabled;
     GraphicsContext* c = drawingContext();
     if (c)
-        c->setImageInterpolationQuality(enabled ? DefaultInterpolationQuality : InterpolationNone);
+        c->setImageInterpolationQuality(enabled ? CanvasDefaultInterpolationQuality : InterpolationNone);
 }
 
 PassRefPtr<Canvas2DContextAttributes> CanvasRenderingContext2D::getContextAttributes() const
 {
     RefPtr<Canvas2DContextAttributes> attributes = Canvas2DContextAttributes::create();
     attributes->setAlpha(m_hasAlpha);
     return attributes.release();
 }
 
 void CanvasRenderingContext2D::drawSystemFocusRing(Element* element)
@@ skipping 86 matching lines @@
     const int focusRingWidth = 5;
     const int focusRingOutline = 0;
     c->drawFocusRing(path, focusRingWidth, focusRingOutline, focusRingColor);
 
     c->restore();
 
     didDraw(dirtyRect);
 }
 
 } // namespace WebCore