Revert of Improve handling of PaintInvalidationLayer (renamed to PaintInvalidationSubtree)

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 122 matching lines @@
 void LayoutSVGModelObject::invalidateTreeIfNeeded(const 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;
 
     PaintInvalidationState newPaintInvalidationState(paintInvalidationState, *this);
-    PaintInvalidationReason reason = invalidatePaintIfNeeded(newPaintInvalidationState);
+    invalidatePaintIfNeeded(newPaintInvalidationState);
     clearPaintInvalidationFlags(newPaintInvalidationState);
 
-    newPaintInvalidationState.updateForChildren(reason);
+    newPaintInvalidationState.updateForChildren();
     invalidatePaintOfSubtreesIfNeeded(newPaintInvalidationState);
 }
 
 } // namespace blink