| Index: Source/core/layout/LayoutHTMLCanvas.cpp | 
| diff --git a/Source/core/layout/LayoutHTMLCanvas.cpp b/Source/core/layout/LayoutHTMLCanvas.cpp | 
| index 1b3511156ee7bc6e4ac3a9c4c2c64a84ff4822e1..7b648d4c25045272f20e5e18decea6e3f0f98205 100644 | 
| --- a/Source/core/layout/LayoutHTMLCanvas.cpp | 
| +++ b/Source/core/layout/LayoutHTMLCanvas.cpp | 
| @@ -81,7 +81,7 @@ void LayoutHTMLCanvas::canvasSizeChanged() | 
| setNeedsLayout(); | 
| } | 
|  | 
| -PaintInvalidationReason LayoutHTMLCanvas::invalidatePaintIfNeeded(const PaintInvalidationState& paintInvalidationState, const LayoutBoxModelObject& paintInvalidationContainer) | 
| +PaintInvalidationReason LayoutHTMLCanvas::invalidatePaintIfNeeded(PaintInvalidationState& paintInvalidationState, const LayoutBoxModelObject& paintInvalidationContainer) | 
| { | 
| PaintInvalidationReason reason = LayoutBox::invalidatePaintIfNeeded(paintInvalidationState, paintInvalidationContainer); | 
| HTMLCanvasElement* element = toHTMLCanvasElement(node()); | 
|  |