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

Source/core/layout/svg/LayoutSVGModelObject.cpp

 /*
  * Copyright (c) 2009, Google 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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 108 matching lines @@
     return false;
 }
 
 // The SVG addFocusRingRects() method adds rects in local coordinates so the default absoluteFocusRingBoundingBoxRect
 // returns incorrect values for SVG objects. Overriding this method provides access to the absolute bounds.
 IntRect LayoutSVGModelObject::absoluteFocusRingBoundingBoxRect() const
 {
     return localToAbsoluteQuad(FloatQuad(paintInvalidationRectInLocalCoordinates())).enclosingBoundingBox();
 }
 
-void LayoutSVGModelObject::invalidateTreeIfNeeded(const PaintInvalidationState& paintInvalidationState)
+void LayoutSVGModelObject::invalidateTreeIfNeeded(PaintInvalidationState& paintInvalidationState)
 {
     ASSERT(!needsLayout());
 
     // If we didn't need paint invalidation then our children don't need as well.
     // Skip walking down the tree as everything should be fine below us.
     if (!shouldCheckForPaintInvalidation(paintInvalidationState))
         return;
 
     invalidatePaintIfNeeded(paintInvalidationState, paintInvalidationState.paintInvalidationContainer());
     clearPaintInvalidationState(paintInvalidationState);
 
     PaintInvalidationState childPaintInvalidationState(paintInvalidationState, *this);
     invalidatePaintOfSubtreesIfNeeded(childPaintInvalidationState);
 }
 
 } // namespace blink