Get rid of one-off paint invalidation code for paints-into-ancestor compositing state

Source/core/rendering/compositing/RenderLayerCompositor.cpp

 /*
  * Copyright (C) 2009, 2010 Apple Inc. All rights reserved.
  *
  * 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
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 476 matching lines @@
 
 void RenderLayerCompositor::repaintOnCompositingChange(RenderLayer* layer)
 {
     // If the renderer is not attached yet, no need to repaint.
     if (layer->renderer() != &m_renderView && !layer->renderer()->parent())
         return;
 
     layer->repainter().repaintIncludingNonCompositingDescendants();
 }
 
-// This method assumes that layout is up-to-date, unlike repaintOnCompositingChange().
-void RenderLayerCompositor::repaintInCompositedAncestor(RenderLayer* layer, const LayoutRect& rect)
-{
-    RenderLayer* compositedAncestor = layer->enclosingCompositingLayerForPaintInvalidation(ExcludeSelf);
-    if (!compositedAncestor)
-        return;
-    ASSERT(compositedAncestor->compositingState() == PaintsIntoOwnBacking || compositedAncestor->compositingState() == PaintsIntoGroupedBacking);
-
-    LayoutPoint offset;
-    layer->convertToLayerCoords(compositedAncestor, offset);
-    LayoutRect repaintRect = rect;
-    repaintRect.moveBy(offset);
-    compositedAncestor->repainter().setBackingNeedsRepaintInRect(repaintRect);
-}
-
 void RenderLayerCompositor::frameViewDidChangeLocation(const IntPoint& contentsOffset)
 {
     if (m_overflowControlsHostLayer)
         m_overflowControlsHostLayer->setPosition(contentsOffset);
 }
 
 void RenderLayerCompositor::frameViewDidChangeSize()
 {
     if (m_containerLayer) {
         FrameView* frameView = m_renderView.frameView();
@@ skipping 686 matching lines @@
     } else if (graphicsLayer == m_scrollLayer.get()) {
         name = "LocalFrame Scrolling Layer";
     } else {
         ASSERT_NOT_REACHED();
     }
 
     return name;
 }
 
 } // namespace WebCore