| Index: Source/core/rendering/RenderLayerCompositor.cpp
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| diff --git a/Source/core/rendering/RenderLayerCompositor.cpp b/Source/core/rendering/RenderLayerCompositor.cpp
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| index 137d720f554ad6685611ef3fab7a88072cb5f5c5..6236f3262f78e06a7893214656d785fb5ded218e 100644
 | 
| --- a/Source/core/rendering/RenderLayerCompositor.cpp
 | 
| +++ b/Source/core/rendering/RenderLayerCompositor.cpp
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| @@ -99,7 +99,7 @@ public:
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|  
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|      void unite(const OverlapMapContainer& otherContainer)
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|      {
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| -        m_layerRects.append(otherContainer.m_layerRects);
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| +        m_layerRects.appendVector(otherContainer.m_layerRects);
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|          m_boundingBox.unite(otherContainer.m_boundingBox);
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|      }
 | 
|  private:
 | 
| 
 |