Switch to null root property tree nodes [spv2]

third_party/WebKit/Source/core/paint/PaintPropertyTreePrinter.cpp

Index: third_party/WebKit/Source/core/paint/PaintPropertyTreePrinter.cpp
diff --git a/third_party/WebKit/Source/core/paint/PaintPropertyTreePrinter.cpp b/third_party/WebKit/Source/core/paint/PaintPropertyTreePrinter.cpp
index 95c705b74b96ba744d0637b3af9a8f004222fc9b..fd08dd69b63b65772abb01273b31a793191faa42 100644
--- a/third_party/WebKit/Source/core/paint/PaintPropertyTreePrinter.cpp
+++ b/third_party/WebKit/Source/core/paint/PaintPropertyTreePrinter.cpp
@@ -94,8 +94,6 @@ class PropertyTreePrinterTraits<TransformPaintPropertyNode> {
 public:
     static void addFrameViewProperties(const FrameView& frameView, PropertyTreePrinter<TransformPaintPropertyNode>& printer)
     {
-        if (const TransformPaintPropertyNode* rootTransform = frameView.rootTransform())
-            printer.addPropertyNode(rootTransform, "RootTransform (FrameView)");
         if (const TransformPaintPropertyNode* preTranslation = frameView.preTranslation())
             printer.addPropertyNode(preTranslation, "PreTranslation (FrameView)");
         if (const TransformPaintPropertyNode* scrollTranslation = frameView.scrollTranslation())
@@ -144,8 +142,6 @@ class PropertyTreePrinterTraits<ClipPaintPropertyNode> {
 public:
     static void addFrameViewProperties(const FrameView& frameView, PropertyTreePrinter<ClipPaintPropertyNode>& printer)
     {
-        if (const ClipPaintPropertyNode* rootClip = frameView.rootClip())
-            printer.addPropertyNode(rootClip, "RootClip (FrameView)");
         if (const ClipPaintPropertyNode* contentClip = frameView.contentClip())
             printer.addPropertyNode(contentClip, "ContentClip (FrameView)");
     }
@@ -174,8 +170,6 @@ class PropertyTreePrinterTraits<EffectPaintPropertyNode> {
 public:
     static void addFrameViewProperties(const FrameView& frameView, PropertyTreePrinter<EffectPaintPropertyNode>& printer)
     {
-        if (const EffectPaintPropertyNode* rootEffect = frameView.rootEffect())
-            printer.addPropertyNode(rootEffect, "RootEffect (FrameView)");
     }
 
     static void addObjectPaintProperties(const LayoutObject& object, const ObjectPaintProperties& paintProperties, PropertyTreePrinter<EffectPaintPropertyNode>& printer)
@@ -195,8 +189,6 @@ class PropertyTreePrinterTraits<ScrollPaintPropertyNode> {
 public:
     static void addFrameViewProperties(const FrameView& frameView, PropertyTreePrinter<ScrollPaintPropertyNode>& printer)
     {
-        if (const ScrollPaintPropertyNode* rootScroll = frameView.rootScroll())
-            printer.addPropertyNode(rootScroll, "RootScroll (FrameView)");
         if (const ScrollPaintPropertyNode* scroll = frameView.scroll())
             printer.addPropertyNode(scroll, "Scroll (FrameView)");
     }
@@ -387,11 +379,8 @@ private:
         if (cssClipFixedPosition)
             writePaintPropertyNode(*cssClipFixedPosition, &object, "cssClipFixedPosition");
         const ClipPaintPropertyNode* overflowClip = properties->overflowClip();
-        if (overflowClip) {
+        if (overflowClip)
             writePaintPropertyNode(*overflowClip, &object, "overflowClip");
-            if (object.isLayoutView() && overflowClip->parent())
-                writePaintPropertyNode(*overflowClip->parent(), nullptr, "rootClip");
-        }
         const ScrollPaintPropertyNode* scroll = properties->scroll();
         if (scroll)
             writePaintPropertyNode(*scroll, &object, "scroll");
@@ -399,15 +388,6 @@ private:
 
     void writeFrameViewPaintPropertyNodes(const FrameView& frameView)
     {
-        TransformPaintPropertyNode* rootTransform = frameView.rootTransform();
-        if (rootTransform)
-            writePaintPropertyNode(*rootTransform, &frameView, "rootTransform");
-        ClipPaintPropertyNode* rootClip = frameView.rootClip();
-        if (rootClip)
-            writePaintPropertyNode(*rootClip, &frameView, "rootClip");
-        EffectPaintPropertyNode* rootEffect = frameView.rootEffect();
-        if (rootEffect)
-            writePaintPropertyNode(*rootEffect, &frameView, "rootEffect");
         TransformPaintPropertyNode* preTranslation = frameView.preTranslation();
         if (preTranslation)
             writePaintPropertyNode(*preTranslation, &frameView, "preTranslation");