Disable paint invalidatin optimization about SVG transform change

Source/core/rendering/svg/RenderSVGModelObject.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 131 matching lines @@
 void RenderSVGModelObject::invalidatePaintIfNeeded(const PaintInvalidationState& paintInvalidationState)
 {
     ForceHorriblySlowRectMapping slowRectMapping(&paintInvalidationState);
 
     const LayoutRect oldPaintInvalidationRect = previousPaintInvalidationRect();
     const LayoutPoint oldPositionFromPaintInvalidationContainer = previousPositionFromPaintInvalidationContainer();
     ASSERT(paintInvalidationState.paintInvalidationContainer() == containerForPaintInvalidation());
     setPreviousPaintInvalidationRect(boundsRectForPaintInvalidation(&paintInvalidationState.paintInvalidationContainer(), &paintInvalidationState));
     setPreviousPositionFromPaintInvalidationContainer(RenderLayer::positionFromPaintInvalidationContainer(this, &paintInvalidationState.paintInvalidationContainer(), &paintInvalidationState));
 
-    // If an ancestor container had its transform changed, then we just
-    // need to update the RenderSVGModelObject's repaint rect above. The invalidation
-    // will be handled by the container where the transform changed. This essentially
-    // means that we prune the entire branch for performance.
-    RenderObject* parent = this->parent();
-    if (parent && parent->isSVGContainer() && toRenderSVGContainer(parent)->didTransformToRootUpdate())
-        return;
-
     // If we are set to do a full paint invalidation that means the RenderView will be
     // issue paint invalidations. We can then skip issuing of paint invalidations for the child
     // renderers as they'll be covered by the RenderView.
     if (view()->doingFullRepaint())
         return;
 
     RenderObject::invalidatePaintIfNeeded(paintInvalidationState.paintInvalidationContainer(), oldPaintInvalidationRect, oldPositionFromPaintInvalidationContainer, paintInvalidationState);
 }
 
 } // namespace blink