Store repaint rects in the coordinate space of their backing GraphicsLayer.

Source/core/rendering/svg/RenderSVGRoot.cpp

 /*
  * Copyright (C) 2004, 2005, 2007 Nikolas Zimmermann <zimmermann@kde.org>
  * Copyright (C) 2004, 2005, 2007, 2008, 2009 Rob Buis <buis@kde.org>
  * Copyright (C) 2007 Eric Seidel <eric@webkit.org>
  * Copyright (C) 2009 Google, Inc.
  * Copyright (C) Research In Motion Limited 2011. 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
  * License as published by the Free Software Foundation; either
@@ skipping 366 matching lines @@
     // If the box is decorated or is overflowing, extend it to include the border-box and overflow.
     if (m_hasBoxDecorations || hasRenderOverflow()) {
         // The selectionRect can project outside of the overflowRect, so take their union
         // for repainting to avoid selection painting glitches.
         LayoutRect decoratedRepaintRect = unionRect(localSelectionRect(false), visualOverflowRect());
         repaintRect.unite(decoratedRepaintRect);
     }
 
     // Compute the repaint rect in the parent coordinate space.
     LayoutRect rect = enclosingIntRect(repaintRect);
-    RenderReplaced::computeRectForRepaint(repaintContainer, rect);
+    RenderReplaced::mapRectToRepaintBacking(repaintContainer, rect);
     return rect;
 }
 
 void RenderSVGRoot::computeFloatRectForRepaint(const RenderLayerModelObject* repaintContainer, FloatRect& repaintRect, bool fixed) const
 {
     // Apply our local transforms (except for x/y translation), then our shadow,
     // and then call RenderBox's method to handle all the normal CSS Box model bits
     repaintRect = m_localToBorderBoxTransform.mapRect(repaintRect);
 
     // Apply initial viewport clip
     if (shouldApplyViewportClip())
         repaintRect.intersect(pixelSnappedBorderBoxRect());
 
     LayoutRect rect = enclosingIntRect(repaintRect);
-    RenderReplaced::computeRectForRepaint(repaintContainer, rect, fixed);
+    RenderReplaced::mapRectToRepaintBacking(repaintContainer, rect, fixed);
     repaintRect = rect;
 }
 
 // This method expects local CSS box coordinates.
 // Callers with local SVG viewport coordinates should first apply the localToBorderBoxTransform
 // to convert from SVG viewport coordinates to local CSS box coordinates.
 void RenderSVGRoot::mapLocalToContainer(const RenderLayerModelObject* repaintContainer, TransformState& transformState, MapCoordinatesFlags mode, bool* wasFixed) const
 {
     ASSERT(mode & ~IsFixed); // We should have no fixed content in the SVG rendering tree.
     // We used to have this ASSERT here, but we removed it when enabling layer squashing.
@@ skipping 45 matching lines @@
             updateHitTestResult(result, pointInBorderBox);
             if (!result.addNodeToRectBasedTestResult(node(), request, locationInContainer, boundsRect))
                 return true;
         }
     }
 
     return false;
 }
 
 }