Handle '<something>' to 'none' changes of 'transform' for SVG

third_party/WebKit/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 85 matching lines @@
 
 void LayoutSVGModelObject::addLayerHitTestRects(LayerHitTestRects&, const PaintLayer* currentLayer, const LayoutPoint& layerOffset, const LayoutRect& containerRect) const
 {
     // We don't walk into SVG trees at all - just report their container.
 }
 
 void LayoutSVGModelObject::styleDidChange(StyleDifference diff, const ComputedStyle* oldStyle)
 {
     if (diff.needsFullLayout()) {
         setNeedsBoundariesUpdate();
-        if (style()->hasTransform())
+        if (diff.transformChanged())
             setNeedsTransformUpdate();
     }
 
     if (isBlendingAllowed()) {
         bool hasBlendModeChanged = (oldStyle && oldStyle->hasBlendMode()) == !style()->hasBlendMode();
         if (parent() && hasBlendModeChanged)
             parent()->descendantIsolationRequirementsChanged(style()->hasBlendMode() ? DescendantIsolationRequired : DescendantIsolationNeedsUpdate);
     }
 
     LayoutObject::styleDidChange(diff, oldStyle);
@@ skipping 23 matching lines @@
         return;
 
     invalidatePaintIfNeeded(paintInvalidationState, paintInvalidationState.paintInvalidationContainer());
     clearPaintInvalidationState(paintInvalidationState);
 
     PaintInvalidationState childPaintInvalidationState(paintInvalidationState, *this);
     invalidatePaintOfSubtreesIfNeeded(childPaintInvalidationState);
 }
 
 } // namespace blink