Remove CompositingReasons.*

sky/engine/core/rendering/RenderHTMLCanvas.cpp

Index: sky/engine/core/rendering/RenderHTMLCanvas.cpp
diff --git a/sky/engine/core/rendering/RenderHTMLCanvas.cpp b/sky/engine/core/rendering/RenderHTMLCanvas.cpp
index 1b832fafb38ed9caf26370fa58b4d1b9bc5ee9e5..9f83e4905115181a8c73145ebf86e1adf7e6b7d5 100644
--- a/sky/engine/core/rendering/RenderHTMLCanvas.cpp
+++ b/sky/engine/core/rendering/RenderHTMLCanvas.cpp
@@ -107,13 +107,4 @@ void RenderHTMLCanvas::canvasSizeChanged()
         setNeedsLayoutAndFullPaintInvalidation();
 }
 
-CompositingReasons RenderHTMLCanvas::additionalCompositingReasons() const
-{
-    HTMLCanvasElement* canvas = toHTMLCanvasElement(node());
-    if (canvas->renderingContext() && canvas->renderingContext()->isAccelerated())
-        return CompositingReasonCanvas;
-
-    return CompositingReasonNone;
-}
-
 } // namespace blink