Remove mask painting.

sky/engine/core/rendering/RenderBox.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, 2010 Apple Inc. All rights reserved.
  * Copyright (C) 2013 Adobe Systems Incorporated. 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 481 matching lines @@
     // If there is only one layer and no image, check whether the background color is opaque
     if (!fillLayer.next() && !fillLayer.hasImage()) {
         Color bgColor = resolveColor(CSSPropertyBackgroundColor);
         if (bgColor.alpha() == 255)
             return true;
     }
 
     return false;
 }
 
-void RenderBox::paintMask(PaintInfo& paintInfo, const LayoutPoint& paintOffset)
-{
-    LayoutRect paintRect = LayoutRect(paintOffset, size());
-    paintFillLayers(paintInfo, Color::transparent, style()->maskLayers(), paintRect, BackgroundBleedNone);
-    paintNinePieceImage(paintInfo.context, paintRect, style(), style()->maskBoxImage());
-}
-
 void RenderBox::paintFillLayers(const PaintInfo& paintInfo, const Color& c, const FillLayer& fillLayer, const LayoutRect& rect,
     BackgroundBleedAvoidance bleedAvoidance, RenderObject* backgroundObject)
 {
     Vector<const FillLayer*, 8> layers;
     const FillLayer* curLayer = &fillLayer;
     bool shouldDrawBackgroundInSeparateBuffer = false;
     bool isBottomLayerOccluded = false;
     while (curLayer) {
         layers.append(curLayer);
         // Stop traversal when an opaque layer is encountered.
@@ skipping 42 matching lines @@
 }
 
 void RenderBox::paintFillLayer(const PaintInfo& paintInfo, const Color& c, const FillLayer& fillLayer, const LayoutRect& rect,
     BackgroundBleedAvoidance bleedAvoidance, RenderObject* backgroundObject, bool skipBaseColor)
 {
     paintFillLayerExtended(paintInfo, c, fillLayer, rect, bleedAvoidance, 0, LayoutSize(), backgroundObject, skipBaseColor);
 }
 
 bool RenderBox::pushContentsClip(PaintInfo& paintInfo, const LayoutPoint& accumulatedOffset, ContentsClipBehavior contentsClipBehavior)
 {
-    if (paintInfo.phase == PaintPhaseMask)
-        return false;
-
     bool isOverflowClip = hasOverflowClip() && !layer()->isSelfPaintingLayer();
     if (!isOverflowClip)
         return false;
 
     LayoutRect clipRect = overflowClipRect(accumulatedOffset);
     RoundedRect clipRoundedRect(0, 0, 0, 0);
     bool hasBorderRadius = style()->hasBorderRadius();
     if (hasBorderRadius)
         clipRoundedRect = style()->getRoundedInnerBorderFor(LayoutRect(accumulatedOffset, size()));
 
@@ skipping 2114 matching lines @@
 
 RenderBox::BoxDecorationData::BoxDecorationData(const RenderStyle& style)
 {
     backgroundColor = style.colorIncludingFallback(CSSPropertyBackgroundColor);
     hasBackground = backgroundColor.alpha() || style.hasBackgroundImage();
     ASSERT(hasBackground == style.hasBackground());
     hasBorder = style.hasBorder();
 }
 
 } // namespace blink