Remove mask painting.

sky/engine/core/rendering/RenderLayer.cpp

 /*
  * Copyright (C) 2006, 2007, 2008, 2009, 2010, 2011, 2012 Apple Inc. All rights reserved.
  *
  * Portions are Copyright (C) 1998 Netscape Communications Corporation.
  *
  * Other contributors:
  *   Robert O'Callahan <roc+@cs.cmu.edu>
  *   David Baron <dbaron@fas.harvard.edu>
  *   Christian Biesinger <cbiesinger@web.de>
  *   Randall Jesup <rjesup@wgate.com>
@@ skipping 932 matching lines @@
     paintChildren(NormalFlowChildren | PositiveZOrderChildren, context, paintingInfo, paintFlags);
 
     if (filterPainter.hasStartedFilterEffect()) {
         context = filterPainter.applyFilterEffect();
         restoreClip(transparencyLayerContext, localPaintingInfo.paintDirtyRect, backgroundRect);
     }
 
     // Make sure that we now use the original transparency context.
     ASSERT(transparencyLayerContext == context);
 
-    if (shouldPaintContent && renderer()->hasMask())
-        paintMask(context, localPaintingInfo, layerLocation, backgroundRect);
-
     // End our transparency layer
     if (haveTransparency && m_usedTransparency) {
         context->endLayer();
         context->restore();
         m_usedTransparency = false;
     }
 }
 
 void RenderLayer::paintLayerByApplyingTransform(GraphicsContext* context, const LayerPaintingInfo& paintingInfo, PaintLayerFlags paintFlags, const LayoutPoint& translationOffset)
 {
@@ skipping 54 matching lines @@
     // if the rect is empty.
     if (!foregroundRectIsEmpty) {
         PaintInfo paintInfo(context, pixelSnappedIntRect(layerForegroundRect.rect()), PaintPhaseForeground, localPaintingInfo.rootLayer->renderer());
         renderer()->paint(paintInfo, layerLocation);
     }
 
     if (shouldClip)
         restoreClip(context, localPaintingInfo.paintDirtyRect, layerForegroundRect);
 }
 
-void RenderLayer::paintMask(GraphicsContext* context, const LayerPaintingInfo& localPaintingInfo,
-    LayoutPoint& layerLocation, ClipRect& layerBackgroundRect)
-{
-    if (localPaintingInfo.clipToDirtyRect)
-        clipToRect(localPaintingInfo, context, layerBackgroundRect, DoNotIncludeSelfForBorderRadius); // Mask painting will handle clipping to self.
-
-    // Paint the mask.
-    // FIXME: Eventually we will collect the region from the fragment itself instead of just from the paint info.
-    PaintInfo paintInfo(context, pixelSnappedIntRect(layerBackgroundRect.rect()), PaintPhaseMask, localPaintingInfo.rootLayer->renderer());
-    renderer()->paint(paintInfo, layerLocation);
-
-    if (localPaintingInfo.clipToDirtyRect)
-        restoreClip(context, localPaintingInfo.paintDirtyRect, layerBackgroundRect);
-}
-
 static inline LayoutRect frameVisibleRect(RenderObject* renderer)
 {
     FrameView* frameView = renderer->document().view();
     if (!frameView)
         return LayoutRect();
 
     return frameView->visibleContentRect();
 }
 
 bool RenderLayer::hitTest(const HitTestRequest& request, HitTestResult& result)
@@ skipping 635 matching lines @@
     }
 }
 
 void showLayerTree(const blink::RenderObject* renderer)
 {
     if (!renderer)
         return;
     showLayerTree(renderer->enclosingLayer());
 }
 #endif