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

third_party/WebKit/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 50 matching lines @@
 void LayoutSVGBlock::willBeDestroyed()
 {
     SVGResourcesCache::clientDestroyed(this);
     LayoutBlockFlow::willBeDestroyed();
 }
 
 void LayoutSVGBlock::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);
     }
 
     LayoutBlock::styleDidChange(diff, oldStyle);
@@ skipping 38 matching lines @@
 void LayoutSVGBlock::invalidateTreeIfNeeded(PaintInvalidationState& paintInvalidationState)
 {
     if (!shouldCheckForPaintInvalidation(paintInvalidationState))
         return;
 
     ForceHorriblySlowRectMapping slowRectMapping(&paintInvalidationState);
     LayoutBlockFlow::invalidateTreeIfNeeded(paintInvalidationState);
 }
 
 } // namespace blink