Consider 'order' when updating feConvolveMatrix 'target*'

third_party/WebKit/Source/core/svg/SVGFEConvolveMatrixElement.h

Index: third_party/WebKit/Source/core/svg/SVGFEConvolveMatrixElement.h
diff --git a/third_party/WebKit/Source/core/svg/SVGFEConvolveMatrixElement.h b/third_party/WebKit/Source/core/svg/SVGFEConvolveMatrixElement.h
index 41393fd898dd54a50c5ae103c95c3889e0a888c3..ba5f4d34deedb293de460f28c8fdb8a7fb429bee 100644
--- a/third_party/WebKit/Source/core/svg/SVGFEConvolveMatrixElement.h
+++ b/third_party/WebKit/Source/core/svg/SVGFEConvolveMatrixElement.h
@@ -48,8 +48,8 @@ public:
     SVGAnimatedNumberList* kernelMatrix() { return m_kernelMatrix.get(); }
     SVGAnimatedString* in1() { return m_in1.get(); }
     SVGAnimatedEnumeration<EdgeModeType>* edgeMode() { return m_edgeMode.get(); }
-    SVGAnimatedInteger* orderX() { return m_order->firstInteger(); }
-    SVGAnimatedInteger* orderY() { return m_order->secondInteger(); }
+    SVGAnimatedInteger* orderX() const { return m_order->firstInteger(); }
+    SVGAnimatedInteger* orderY() const { return m_order->secondInteger(); }
     SVGAnimatedInteger* targetX() { return m_targetX.get(); }
     SVGAnimatedInteger* targetY() { return m_targetY.get(); }
 
@@ -58,6 +58,9 @@ public:
 private:
     explicit SVGFEConvolveMatrixElement(Document&);
 
+    IntSize matrixOrder() const;
+    IntPoint targetPoint() const;
+
     bool setFilterEffectAttribute(FilterEffect*, const QualifiedName&) override;
     void svgAttributeChanged(const QualifiedName&) override;
     FilterEffect* build(SVGFilterBuilder*, Filter*) override;