Get rid of scheduleSVGFilterLayerUpdateHack call for plugins.

Source/core/rendering/style/RenderStyle.h

Index: Source/core/rendering/style/RenderStyle.h
diff --git a/Source/core/rendering/style/RenderStyle.h b/Source/core/rendering/style/RenderStyle.h
index 2b143d0b98d7ecbb63757c73a95911075ebcf6e8..962b8de93d7cff2eae81d92ab4a6396d42af81a5 100644
--- a/Source/core/rendering/style/RenderStyle.h
+++ b/Source/core/rendering/style/RenderStyle.h
@@ -1394,6 +1394,9 @@ public:
     void setWillChangeScrollPosition(bool b) { SET_VAR(rareNonInheritedData.access()->m_willChange, m_scrollPosition, b); }
     void setSubtreeWillChangeContents(bool b) { SET_VAR(rareInheritedData, m_subtreeWillChangeContents, b); }
 
+    bool requiresAcceleratedCompositingForExternalReasons(bool b) { return rareNonInheritedData->m_requiresAcceleratedCompositingForExternalReasons; }
+    void setRequiresAcceleratedCompositingForExternalReasons(bool b) { SET_VAR(rareNonInheritedData, m_requiresAcceleratedCompositingForExternalReasons, b); }
+
     const SVGRenderStyle* svgStyle() const { return m_svgStyle.get(); }
     SVGRenderStyle* accessSVGStyle() { return m_svgStyle.access(); }