Set relayoutChildren to 'true' only if size change happens in Table

Source/core/rendering/compositing/CompositingLayerAssigner.h

 /*
  * Copyright (C) 2009, 2010 Apple Inc. All rights reserved.
  * Copyright (C) 2014 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:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
@@ skipping 39 matching lines @@
 
 private:
     struct SquashingState {
         SquashingState()
             : mostRecentMapping(0)
             , hasMostRecentMapping(false)
             , haveAssignedBackingsToEntireSquashingLayerSubtree(false)
             , nextSquashedLayerIndex(0)
             , totalAreaOfSquashedRects(0) { }
 
-        void updateSquashingStateForNewMapping(CompositedLayerMapping*, bool hasNewCompositedLayerMapping);
+        void updateSquashingStateForNewMapping(CompositedLayerMapping*);
 
         // The most recent composited backing that the layer should squash onto if needed.
         CompositedLayerMapping* mostRecentMapping;
         bool hasMostRecentMapping;
 
         // Whether all RenderLayers in the stacking subtree rooted at the most recent mapping's
         // owning layer have had CompositedLayerMappings assigned. Layers cannot squash into a
         // CompositedLayerMapping owned by a stacking ancestor, since this changes paint order.
         bool haveAssignedBackingsToEntireSquashingLayerSubtree;
 
@@ skipping 16 matching lines @@
     bool needsOwnBacking(const RenderLayer*) const;
 
     RenderLayerCompositor* m_compositor;
     bool m_layerSquashingEnabled;
     bool m_layersChanged;
 };
 
 } // namespace blink
 
 #endif // CompositingLayerAssigner_h