Delete remaining masks dead code.

sky/engine/core/rendering/RenderBoxModelObject.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2005 Allan Sandfeld Jensen (kde@carewolf.com)
  *           (C) 2005, 2006 Samuel Weinig (sam.weinig@gmail.com)
  * Copyright (C) 2005, 2006, 2007, 2008, 2009 Apple Inc. All rights reserved.
  * Copyright (C) 2010 Google Inc. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
@@ skipping 423 matching lines @@
         // Clip to the overflow area.
         RenderBox* thisBox = toRenderBox(this);
         context->clip(thisBox->overflowClipRect(rect.location()));
 
         // Adjust the paint rect to reflect a scrolled content box with borders at the ends.
         scrolledPaintRect.setWidth(bLeft + thisBox->clientWidth() + bRight);
         scrolledPaintRect.setHeight(borderTop() + thisBox->clientHeight() + borderBottom());
     }
 
     GraphicsContextStateSaver backgroundClipStateSaver(*context, false);
-    IntRect maskRect;
 
     switch (bgLayer.clip()) {
     case PaddingFillBox:
     case ContentFillBox: {
         if (clipToBorderRadius)
             break;
 
         // Clip to the padding or content boxes as necessary.
         bool includePadding = bgLayer.clip() == ContentFillBox;
         LayoutRect clipRect = LayoutRect(scrolledPaintRect.x() + bLeft + (includePadding ? pLeft : LayoutUnit()),
@@ skipping 38 matching lines @@
     // no progressive loading of the background image
     if (shouldPaintBackgroundImage) {
         BackgroundImageGeometry geometry;
         calculateBackgroundImageGeometry(paintInfo.paintContainer(), bgLayer, scrolledPaintRect, geometry, backgroundObject);
         geometry.clip(paintInfo.rect);
         if (!geometry.destRect().isEmpty()) {
             // FIXME(sky): Is it possible for the bgLayer to be something other that CompositeSourceOver?
             CompositeOperator compositeOp = bgLayer.composite();
             RenderObject* clientForBackgroundImage = backgroundObject ? backgroundObject : this;
             RefPtr<Image> image = bgImage->image(clientForBackgroundImage, geometry.tileSize());
-            if (bgLayer.maskSourceType() == MaskLuminance)
-                context->setColorFilter(ColorFilterLuminanceToAlpha);
             InterpolationQuality previousInterpolationQuality = context->imageInterpolationQuality();
             context->setImageInterpolationQuality(InterpolationLow);
             context->drawTiledImage(image.get(), geometry.destRect(), geometry.relativePhase(), geometry.tileSize(),
                 compositeOp, bgLayer.blendMode(), geometry.spaceSize());
             context->setImageInterpolationQuality(previousInterpolationQuality);
         }
     }
 }
 
 static inline int resolveWidthForRatio(int height, const FloatSize& intrinsicRatio)
@@ skipping 1946 matching lines @@
     ASSERT(!beforeChild || toBoxModelObject == beforeChild->parent());
     for (RenderObject* child = slowFirstChild(); child; ) {
         // Save our next sibling as moveChildTo will clear it.
         RenderObject* nextSibling = child->nextSibling();
         moveChildTo(toBoxModelObject, child, beforeChild, fullRemoveInsert);
         child = nextSibling;
     }
 }
 
 } // namespace blink