[S.P.] Don't draw frames of animated images that are offscreen

Source/core/layout/svg/LayoutSVGBlock.cpp

 /*
  * Copyright (C) 2006 Apple Computer, Inc.
  * Copyright (C) 2007 Nikolas Zimmermann <zimmermann@kde.org>
  * Copyright (C) Research In Motion Limited 2010. 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
  * version 2 of the License, or (at your option) any later version.
  *
@@ skipping 103 matching lines @@
     const LayoutSVGRoot& svgRoot = SVGLayoutSupport::mapRectToSVGRootForPaintInvalidation(this, paintInvalidationRect, rect);
     svgRoot.mapRectToPaintInvalidationBacking(paintInvalidationContainer, rect, paintInvalidationState);
 }
 
 bool LayoutSVGBlock::nodeAtPoint(const HitTestRequest&, HitTestResult&, const HitTestLocation&, const LayoutPoint&, HitTestAction)
 {
     ASSERT_NOT_REACHED();
     return false;
 }
 
-void LayoutSVGBlock::invalidateTreeIfNeeded(const PaintInvalidationState& paintInvalidationState)
+void LayoutSVGBlock::invalidateTreeIfNeeded(PaintInvalidationState& paintInvalidationState)
 {
     if (!shouldCheckForPaintInvalidation(paintInvalidationState))
         return;
 
     if (paintInvalidationState.cachedOffsetsEnabled()) {
         m_cachedPaintInvalidationTransform = paintInvalidationState.svgTransform();
     } else {
         m_cachedPaintInvalidationTransform.makeIdentity();
         LayoutObject* next = parent();
         while (!next->isSVGRoot()) {
@@ skipping 10 matching lines @@
 
 void LayoutSVGBlock::updatePaintInfoRect(IntRect& rect)
 {
     if (rect != LayoutRect::infiniteIntRect()) {
         AffineTransform transformToRoot = m_cachedPaintInvalidationTransform * localTransform();
         rect = enclosingIntRect(transformToRoot.inverse().mapRect(FloatRect(rect)));
     }
 }
 
 }