[SPv2] Separate SVG root viewport clip from overflow clip.

third_party/WebKit/Source/core/paint/ObjectPaintProperties.h

Index: third_party/WebKit/Source/core/paint/ObjectPaintProperties.h
diff --git a/third_party/WebKit/Source/core/paint/ObjectPaintProperties.h b/third_party/WebKit/Source/core/paint/ObjectPaintProperties.h
index 0e47c7782c4516f1107ac74f67890ad6a2fd1bec..96821423415aaa50fd8b2469af09fd0a2c6c265c 100644
--- a/third_party/WebKit/Source/core/paint/ObjectPaintProperties.h
+++ b/third_party/WebKit/Source/core/paint/ObjectPaintProperties.h
@@ -83,9 +83,12 @@ public:
     // [ css clip fixed position]
     // |
     // +--- [ overflow clip ]
+    //      |
+    //      +--- [ SVG root viewport clip ]
     const ClipPaintPropertyNode* cssClip() const { return m_cssClip.get(); }
     const ClipPaintPropertyNode* cssClipFixedPosition() const { return m_cssClipFixedPosition.get(); }
     const ClipPaintPropertyNode* overflowClip() const { return m_overflowClip.get(); }
+    const ClipPaintPropertyNode* svgRootViewportClip() const { return m_svgRootViewportClip.get(); }
 
     // This is a complete set of property nodes that should be used as a starting point to paint
     // this layout object. It is needed becauase some property inherits from the containing block,
@@ -112,6 +115,7 @@ public:
     void clearCssClip() { m_cssClip = nullptr; }
     void clearCssClipFixedPosition() { m_cssClipFixedPosition = nullptr; }
     void clearOverflowClip() { m_overflowClip = nullptr; }
+    void clearSvgRootViewportClip() { m_svgRootViewportClip = nullptr; }
     void clearPerspective() { m_perspective = nullptr; }
     void clearSvgLocalToBorderBoxTransform() { m_svgLocalToBorderBoxTransform = nullptr; }
     void clearScrollTranslation() { m_scrollTranslation = nullptr; }
@@ -137,6 +141,7 @@ public:
     template <typename... Args> ClipPaintPropertyNode* createOrUpdateCssClip(Args&&... args) { return createOrUpdateProperty(m_cssClip, std::forward<Args>(args)...); }
     template <typename... Args> ClipPaintPropertyNode* createOrUpdateCssClipFixedPosition(Args&&... args) { return createOrUpdateProperty(m_cssClipFixedPosition, std::forward<Args>(args)...); }
     template <typename... Args> ClipPaintPropertyNode* createOrUpdateOverflowClip(Args&&... args) { return createOrUpdateProperty(m_overflowClip, std::forward<Args>(args)...); }
+    template <typename... Args> ClipPaintPropertyNode* createOrUpdateSvgRootViewportClip(Args&&... args) { return createOrUpdateProperty(m_svgRootViewportClip, std::forward<Args>(args)...); }
 
     void setLocalBorderBoxProperties(std::unique_ptr<LocalBorderBoxProperties> properties) { m_localBorderBoxProperties = std::move(properties); }
 
@@ -159,6 +164,7 @@ private:
     RefPtr<ClipPaintPropertyNode> m_cssClip;
     RefPtr<ClipPaintPropertyNode> m_cssClipFixedPosition;
     RefPtr<ClipPaintPropertyNode> m_overflowClip;
+    RefPtr<ClipPaintPropertyNode> m_svgRootViewportClip;
     RefPtr<TransformPaintPropertyNode> m_perspective;
     // TODO(pdr): Only LayoutSVGRoot needs this and it should be moved there.
     RefPtr<TransformPaintPropertyNode> m_svgLocalToBorderBoxTransform;